captioning sponsored by newshour productions, llc >> woodruff: good evening. i'm judy woodruff. on the "newshour" tonight, asns the country mohis weekend's shooting at a california synagogueriwe look at th of right-wing domestic terrorism and what federal iencies are doing to comb then i sit down for a convertion with 2020 democratic presidential candidate corey booker. plus the record producer and performer behind some of the biggest albums and soundtracks of our time, t. bone burtt, in a rare interview about shaping popular music. >> i'm listening for resonance, and tone, and i'm listening for the story. i'm listening for the story to get told. >> woodruff: all that and more on tonight's "pbs newshour."

>> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> babbel. a language app that teaches real-life conversations in a new language, like spanish, french, german, italian, and more. >> consumer cellular. >> financial services firm raymond james.

>> the william and flora hewlett foundation. for more than 50 years, advancing ideas anitsupporting inions to promote a better world. at www.hewlett.org. a with the ongoing support of these institutions: and individuals. ma >> this program wa possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: the f.b.i. now says gents got a tip before saturday's attack on a synagogue near san diego, but it came too e late. reau says it learned of a threatening social media post ly minutes before a gunm

killed one person and wounded three. separately, another california man was arrested friday, and charged with planning to bomb a white supremacist rally. prosecutors say he wanted tota ate for the attacks on mosques in new zealand. we'll explore the rise of domestic terror, after the news summary. the leader of the islamic state group has been seen for the first time in five years. abu bakr al-baghdadi appeared today in a video. he again claimed responsility for the easter bombings in sri lanka. he said they were revenge for the loss of the last isis stronghold in syria. in sri lanka catholic clergy are demanding a crackdown on islamic extremists after the bombings that killed more than 250 people. security forces patrolled againn today as thefor suspects continued, but the archbishop of colombo warned there needs to be far tougher action.

>> ( translated ): i want to state that we may not be able to tep people under control absence of a stronger security program. we can't fever give them false promises and keep them calm to implement a proper program in order that the people don't take the law into their own hands. >> woodruff: in the meantime, sri lanka's president today banned all kinds of face coverings, including veils worn by muslim women. the u.s. military has fired the commander overseeing terror detainees at guantanamo bay, cuba. a u.s. southern command statement says navy rear admiral john ring was let go for a "loss of confidence in his ability to command." about 40 prisoners are still held at guantanamo, down from almost 700 in 2003. northern mozambique has endured anotr day of heavy rain and widespread flooding after a tropical cyclone hit last week.

meanwhile, the death toll climbed today to at least 38. the flooding has submerged entire neighborhoods under waist-high water and trigged mudslides. more than 35,000 homes and businesses are damagedr destroyed. in spain a far-right party will sit in parliament for the first time in decades, the latest sig of a trend acrrope. supporters of the "vox" party sang and waved flags to celebrate sunday's election results. their leader defended opposition to immigration, abortion and gender equity laws, this morning. >> ( translated ): we are not extremists, not ultra- lght or anythie that. an are saying things that are common sense forspaniards, and we are saying them with a great deal of calm and tranquility. >> woodruff: the ruling socialists finished first in the voting, but they face weeks of negotiations to assemble a governing coalition. the head of boeing today defended the company's safety

record after two fatal crashes of the 737-max. c.o. dennis muilenburg spo at the company's annual meeting in chicago. he acknoedged that bad sensor data played a role in both accidents, but hinsisted it was not the only factor. >> there are a chain oevents that occur, its not correct to attribute that to any single item. we will continually look for opportunities to improve safety. that's our responsibility and that's part of re-earning that trust. >> woodruff: meanwhile, boeing disputed reports that it had turned off an indicator that could have warned of a sensor failure in both crashes.co but thany said the warning will be activated on all planes, going forward.tb the measles ak in the u.s. is now officially the worst in 25 years. the centers for disease control thand prevention said toda 704 cases have been reported so far this year. three-quarters involvedren

or teenagers.od on wall streay, the dow jones industrial average gained 11 points to close at 26,554. the nasdaq rose 15 poi50s and the s&added three.or and,r republican senator richard lugar of indiana wasod remembered as a leading foreign policy voice. he served six terms, chaired the foreign relations committee and pushed to dismantle soviet nuclear weapons after the cold war. in 2017, lugar appeared with formerongressman lee hamilton on the "newshour" and warned president trp against dismissing diplomacy. >> he needs to indate that we are not going to cut the budget of the state department, that we're not going to cut foreign aid or potential assistance even e starving people around world. in other words, we really need a burst of enthusiasm for american humanitarianism, american reacho

outher countries and other people. >> woodruff: lugar served through 2012, when he lost a re- election bid to a tea party challenger richard lugar was 87-years-old. st,"l to come on the "newsho the growing threat of white supremacist terrorist attacks in the u.s., i sit down with democratic presidential candidate corey booker, amy walter and tara keith join us to talk 2020, searching for the remains of kidnapping victims in colombia and much more. >> woodruff: the shooting at a len diego synagogue appears to be the latest in aof hate- driven domestic tendor attacks arhe nation, with the shooter leaving a manifesto praisi attacks on a pittsburgh

synagogue and mosques in new zealand. with the spotlight on these pes of attacks, amna naw explores the trump administration's strategy for preventing more. ( sirens ) >> reporter: a passover celebration interrupted by gunfire. the latest attack inspired by white supremacy to shake an american community. a 19-year-old gunman allegedly opened fire saturday at a synagogue in poway, california during temple services, killingi one and wounng three. eight-year-old noya dahan waseo one of 1ple there that day. she was hit by bullet fragments. >> i never thought that was going to happen, because it's a tofe place, you're suppose feel safe. >> repter: the shooter posted an anti-semitic letter online hours before the shooting.y he was eventuarested and charged with murder. at a sunday vigil, theti congre's rabbi, who lost a

finger in the shooting, spoke. >> this is not supposed to happen. n this isni germany. this isn't a pogrom. this is right here in poway. this is our home. >> reporter: the poway shooting six weeks after a gunman killed 50 people at two mosques in christchurch, new zealand.an six months agovowed white- nationalist killed 11 at a synagogue in pittsburgh. and a white supremacist in charleston, south carolina killed ninblack parishioners in 2015. and in 2017 a white supremacist murdered a counter protester in charlottesville, virginia after a white nationalist rally there turned violent. president trump saidfter there were "very fine people on both sides." before the synagogue shooting, he defended those remarks. pl>> i was talking about p that went because they felt very strongly about the monument to robert e. lee, a great general. >> reporter: across the countrya meanwhilommunity mourns the loss of congregant lori

e ye, and seeks to make se another targeted mass attack in america. here to discuss the united states' strategy to combatsm domestic terros nicholas rasmussen, former director of the national counter-terrorism center-- that's the intelligence communy's hub for analysis and information-sharing related to terrorism. he is now senior director for national security and counter- terrorism programs at the mccain institute for international leadership and a professor of law at arizona state unirsity. nick rasmussen, welcome back to the newshour. the "newshour" >> great to be here. federal authorities say they twartd a dmestic terror aplot, muiple targets seeking retribution for attacks against museum membersf community in christchurch, new zealand, inside the mosque. this is someone who is a recent convert to isam. we have the attack we saw over

the weekend, in poway. broadly speaking,xplain the differences or the ways in which ase two cases are similar. >> well, when a occurs like the one you just spoke about that emerged today, it's easier for fertility law enforcement in some ways to pursue charges against the person in advance of them actuallcarrying out a criminal act. an individual who either in their online acivity or in speak to an undercover person, an agent of the f.a.i. tht offers support for the islamic state, for example, that is enough to bring thm into legal jeopardy and to give the f.b.i. the ability to use a whole suite of investigative tools. er hand, the individuals who carried out the attack against the synagogue in california is a harder problem r law enforcement. that individual may not have taken any steps or engaged in any behavior before the actual attack that would have alowed law enforcement to actually engage in investigative behavior, and that'somewhat of

a distinction between domestic terrorism on the one hand and international terrorism on the other hand. a distinction that may not make sensin the current environment. >> so what needs to change within the system to address that? >> one idea that's been talked about and i think it'rth looking at is whether there might be some creation if not a domestic terrorism statute, at least including these typfes domestic terror incidents in our drrorism steachts that wo perhaps allow the phish at an earlier stage to be more intrusive with their investigative techniques and to bring more investigative techniques to bear rather than simply waiting -- not to suggest the f.b.i. is waiting for violence to cur, but the f.b.i. is often hamstrung in their ability to get in front of attacklike thes >> so the patriot act that gives folks authority to look into some of those cases, it givesbr d authority to the justice department. there's pushback against the ea you propose that says if you include more cases under

that umbrella of terrorism, you're basically broadening ap gr people that can be investigated by their own government. wh >> of course, that's a concern. you would have to put parameters around this authority if yourin opinion to give it to federal law enforcement because we would not want to create a situation in wich legitimate expressions of free speech even if deemed offensive by a vast majority of americans, we don't want to create a situation where these tools chill free speech. >> there are investigative tools and prosecutorial tools to address this. in charlottesville, he pled guilty to a federal hate crime. the charleston, south carolina shooter, the were a host of deral and state crimes he was convicted of. why create a new statute? why is that necessary? >> two reasons. one is pure moral equivalence. terrorism to me is ter when someone carries out a violent act aimedagainst innocent civilians for if you were of advance ago politial

agenda, to me that satisfies the definition of terrorism. whether the ideology tha motivates that is i.s.i.s.,a, al quaihadist ideology or some awful, hateful whiementsest or anti-semitic agenda. so there's a moral equivalence we would establish if we hadhe legal framework in place to do just that. as i said, it goes beyond that. changing the statutory framework would also give the f.b.i. more tools and, to my mind, we're seeing an uptick in the frequency of these kinds of events. so i would want to give. f.b the ability to intervene and to be moreggressive investigatively at an earlier stage and hope flee get on the preventative side of this rather than weight for these incidents to occur. >> you win mentioned the uptickn the attacks. why are weeeing t uptick? >> that's the million-dollar question. you can point to the broader political environment not just here in the united states, it's

globally, where groups or individuals who feel aggrieved, disadvantaged or downtrodden will look for some other group,e ther ethnic or religious group at which to layt the feet the responsibility for their particular situation in life. so the kind of aggressive political narrative wre seeing around the world that looks to amplify these grievances is adding to the r >> has the federal government done all it can? >> i think there's more to be done and i think the trump administration should be given threat.t.e. in thir counterterrorism strategy published last year, the pointed to domestic terrorism that needs to be adressed. saying it in a strategy document is different than putting into practice prs,gruiding resources to the relevant departments and agencies, priorititng this among oher issues. >> have they done any of that.at

emains to be seen. you've not seen that. no tnearly enough inhis area. >> nick rasmussen, thank you so much for being here today.t' >> great to be here, thank you. >> woodruff: as cre field of deic candidates for president grows, so, too, does the map of key states they are visiting. lisa desjardins takes a look. >> reporter: today in pittsburgh, former vice president joe biden's first speech as a cuent presidential candidate. >> the country wn't built by wall street bankers, c.e.o.'sui wasuilty thgreat >> reporter: choosing his native pennsyania, biden aimed to show he can win with frustrated, swing voters. >> if i'm going to be able to beat donald trump in 2020 it's going to happen here. ( cheers )

>> reporter: biden's 2020 democratic rivals have spent little time in pennsylvania so far. but in nevada this weekend, a handful of democrats made similar overtures to working class voters at a union conference in las vegas. >> we must get a $15 min wage. >> reporter: minnesota senator amy klobuchar.>> e're strongest when we stand together. >> reporter: massachusetts senar elizabeth warren. >> there is a direct correlation between the ncerted attacks on organized labor and the increase >> reporter:lso there: california senator kamala harris, and former texas congressman beto o'rourke. this weekend the former congressman also unveiled a ten- year, $5 trillion climate change plan that aims to get the u.s. to net-zero greenhouse gas emissions by 2050. his plan uses an initial government investment to spark private spending. in the meantime, new jersey senator cory"jooker took his tice for all" tour, focused on criminal justice reform, to flora. booker is pushing to expand voting rights for felons-- something florida voters

approved last year and some in the state legislature are trying to limit. in the endorsement re, biden scored his first big win-- the endorsement of the international association of firefighters. >> he's one of the staunchest advocates for working families. >> reporter: biden is zeroing in on a key set of 2020 battlegrounds-- seeking to rebuild the so-called "blue wall" states of wisconsin, michigan and pennsylvania-- homo any white, working class voters. biden and president obama won 2ose three states both in8 and 2012. but in 2016, president trump flipped them red. and mr. trump is fighting to keep that bloc. over the weekend, mr. trump held a rally in green bay, wisconsin. apane e stermanufacturing state privately pledged to invest billions in new car factories. >> they're coming back. they want to bback to ohio.

to pennsylvania. >> reporter: and today, mr. trump criticized biden's inaugural speech in pennsylvania, touting the state's steel industno and strong e. it is likely the first of many viets to the state by both former vice president and the president. for the "pbs newshour," i'm lisa desjardins. >> woodruff: senator cory booker is one of 20 democts competing for his party's presidential nomination. he just wrapped up his two week long "justice for all" tour and he joins us now. oknator booker, welcome. senator bo, welcome to the "newshour". >> thank you very much. it's good to be here with you. >> woodruff: so as we said, you're one of the 20.th k it's fair to say a number of voters out there are 'rerwhelmed. thtrying to understand how is one candidate different from another. as they look at you, how to they

think cory booker is different from the other candidates. >> i think two things distinguish me. one is a verntdiffeareer than the others in the race. i was a chief executive of my state's largest city through a crisis, and we actually created probably one of the best city comebacks in a decade from crime and corruption, now going rough its biggest expansion economically, going through the iggest transformation of the school system anre. on top of that, i am a united states senator that has a reputation in washington for getting things done. in fact, the only piece of maj bipartisan legislation that passed under this president was legislation i ran on the democratic side with dick durbin for criminal justice reform. so getting thgs done in two different environments, chief executive and a legislature, indicates the kind of leader i will be. this is a time folks believe this is time where democrats have to fight fire with fire. as a guy who ran a fire department, that's not a god

strategy. we have to define ourselves what we're for, not just again. we need a revival ofivic grace and call to our higr angels, not fighting donald trump on his own turf and terms. >> woodruff: speaking of the things you're for, one of the things you're talking about in your justice for all tour, is expanding theax earned income credit, something originally conceived to help the working poor. you're talking about greatly expanding it so coups earning as much as $90,000 a year would be eligible. the question is it would cost $2.5 trillion over a period of years. are you undermining the originat purpose of which is to help the working poor? >> i think families often making dual income, people making under $90,000 a year are feeling the ever is going up from hisqueeze. prescription drugs to childcare. we have a nation nowe wh% of baby boomers did better than their pants. for millennials now down to 50%.

we have a nation who could see the first generation not to do better than the one beore, and a lot of that is because we're a time of corporate profits or 85-year high but wages are at a low. instead of sending tax cuts blowing trillionof dollars of holes in our deficits and thinking some of it is going to trickle down trking people, let's just give working americans making $50,000, $40,000 a year or couples making twice that more of a directh return oeir taxes. >> woodruff: as we said, this would cost $2.5 triion over a decade. you also want to raise the minimum-wage, you want to see that rised $15 an hour. senator warren wants virtuallyee ublic college. she talked about a federal daycare protoam. 'rourke is talking about a $5 trillion climate change plan and on anon. a lot of this is popular but asking are going to b how do we pay for it. >> i can't speak for other folks, but the pay-fors for me

are obviously. one, tax capital gains as ordinary income. a wealthy person buys a psoic and sells it for $10 million, they're paying less than that -s for that than aor janr factory worker. they should be taxed at the sama . that will bring in over a trillion dramplets rolling back the trump tax cuts.e moving back t capital gains tax to where it was in the crazy days of th e oba can bring in a trillion dollars an hour. we can di things wed in my grandparents generation that ha a tax rate that's fair in terms of creating more growth for everyone. >> woodruff: is there a simple democratic message? you've got presidentokrump saying, and this is if the economy stays where it is right now, the economy is continuing to grow, we've got full employment, stock markets are roaring. what's the democrats' simple to

understand answer. >> you can have 20 different people telling you what's that is. my simple swer is we're at a point in our society where the s indices cess don't speak to the average american. the stock market tic g.d.p. numbers don't speak to people in my community. i work in a working class communy where people work at full-time jobs still use food stam t. do you thiey care what the stock market or g.d.p. numbe are. no. i'm not demonizing peoweple of th. why are we gearing the tax code to help people of wealth get more wealth. we put $750 billion in the ta mx coving wealth up. why aren't we going things to make sure people working every day in america can havthe erican dream? that's the problem we have now. there seems to be a lack of empathy and mo courageous empathy is needed in our country to see the strugs of people from

eactory towns to farm towns who can't afford rent in cities because cost is so high. >> woodruff: you favor the medicare for all pln introduced by senator sanders. in essence, it's single payer. it will within four years do away with all private healthnc insu your state of new jersey in november elected new members of congress, democrats, heavily republican districts. do you think voters in thosest cts want to see their private health insurance go away? >> i'm pagmatist. i ran a city and had to try to bend the cost curve of healthcare. the way we're doing it doesn't i'm for medicare but we can't get there right away. we need show first and foremost that we can create a viable public option just by reducing medicare eligibility to 55. we were one vote away from doing that right before i came into the senate. that alone would drive down costs. it would actually create lower costs for people in the private market because more older peo would come into the public option.

so there are pragmatic steps toa take complish goals, expanding healthcare, lowering costs. >> woodruf a few other ings in your justice for all plan.g you've lrked on criminal justice issues. you want to give convicted felons the right to vote, as i'm sure you know senato sanders sad they should not only have the right to vote when released, they should have the right to vote when incarcerated. do you agree? >> that's a fruaystrating d as a guy who lives in an inner city black community and knowon there are milof americans being arrested and convicted and should never be there in the first and not only lose their right to vot their liberty. our prison population in this country has gone up 500 percent since 1908 alone. weocked up more people for marijuana in 2017 than althe violent crimes combined.

we're imprisoning people for doing what the last two presidents admitted to doing. my focus is liberating black and brown and income people from prison because we have a system in america that treats you bet thanyou're rich and guilt if you're poor and innocent. my focus is tearing down the system of mass inconarcerao that we don't even have to have the debate about people's voting rights because the not going to prison in the first place. people that don't belong there are there and i'm going to stop at as president.dr >> wf: senator cory booker, we'll be following you on the campaign trail. >> thank yo. >> wodruff: let's bring in the analysis of our regular "politics monday" do you o amy walter of the "cook panitical reporthost of politics with amy walter on wycn radio d tamera keith, co-host of the npr politics podcast. hello to both of you. it's politics monday. you've just heard from one of the 20 candidates for the y.mocratic nomination, am

what's your reaction to what the cory booker is saying? >> cory booker, it's fascinating because he talked a lot in thath interview ou about his time as a mayor and his time as an exe otive. bucourse, now, he's a senator, and there's another young mayor who's get whole lot of attention need pete buttigieg. i wonder how mch it would be better for cory booker toly actual be running as mayor of booker when he was mayor rather than senator booker. >>oodruff: an outsider. being more of an outsider, exactly. he's no longer the shiny young mayor of this city that he talks a lot about the success he's ha there, but there's also been a lot of criticism, a lot of it from the left, on how he governed and who he chose to partner with while he was inn executive there, namely folks from silicon valley finance, folks in the charter school movement. is, in many ways, has a

similar path tohat pete buttigieg has had, but he does not have the shine that te buttigieg did in part because he's now part of washington and also because of all the tithmes thate criticism has had to build up for his record as mayor. >> woodruff: what do you make of his message? >> one thing that stood out is that he is, i think, trying to draw a contrast between himself and some other candidates, namely joe biden, by not going after president trump in quite the same way. you know, he talked about some people want to fight fire with fire. i don't think we need to do that in this campaign. he has definitely chosen a different path whicis to be sort of a calmi presence on the campaign trail, someone who, you know, his campaign launch tideo had the drummers and was all about, you know, america can be this great place where we come together and we have civic

grac >> woodruff: and we watch him and we're, of course -- you know, we hate to come around to it, but we look at the polls. there are some out there about the candidates. cory booker is saring seventh place. you don't even see him on these numbers we're putting up hre from "the washington post" and abc, amy, but that's better than about a zen of the other democrats. what's interesting here is joe biden is at 13%, buto opinion 47%. joe biden just rolled out and, granted, this poll was wrapping up as he was announcing, but what does at say abo what democrats want? >> one really important things to know about tis poll especially compared to other polls, they asked you a so-called open sended question where they asked who would you support for president and you have to putord a name. they're not reading a list of names for yoto say, yes, i'e heard of this person, i will support that person. so this is really literally for people who have enough knowledge about the field and who's

running and gives an indication of where they are. but that also says to you, fr somebody like joe biden or bernie sanders who do havest al mon% name identification, they're not rolling off the top of people's tongueas of course its this person to serve as president. it is amazing to me, too, to think the field could still be growing. i can't believe it either, but r there are still a num other high profile or at least high level demofocratiicials, senators and governors thinking about jumping in so those two candidates, joe biden and bernie sanders, not really scaring anybody out of this race. >> woodruff: but biden is in the race, now, tam, and are we getting an overwhelming sense of why he's running? is his metsage cominrough? >> he gave a speech today in pittsburgh and he had threeto pillarwhy he was running. the three pillars, and i'm going to get the words wrongere, and hopefully i'll remember all three, but the three pillars were basically taking on

president trump and, you know, turning america's reputation. the second was an economic message about rebuilding america's backbone. the third was abut bringing americans together. so he came out, he had a stmpu speech. you know, the thing about biden, he got into the race late cmompared to se of the other candidates, but he came out with a fully-fledged campaign. he is immediately acting like a frontrunner in that he has a large staff and had this big fundraising push, and he's coming out, you know, acting like a man running for president. at the same time, he's also continued to have to deal with questions including about anita hill and how he handled tt hearing all these years ago, and this is not going to be the last of times that joe biden is going to have to answer questions about things that happened, you know, before some voters were ever born. >> there was something about that speech today, too, in pisburgh, there was a nostalgia there for a time when

biden was firnist run, but, also, it sort of sounded like a nald trump speech in some ways, obviously very different, two very differenteople, but the focus on the backbone of america, america's middle class, the backbone of america here in pennsylvania, with these laborers and union members. >> woodruff: getting the union endorsement. >> getting the union endorsement, basically going after those very people who have been defecting from the democratic pay, not just to donald trump but over the last 10 to 15 years have been moving more to the republican side burs donald trump really captured a lot of those types of voters who felt like theey had been lft behind by the new economy and the democratic party sessed with silicon valley and the coast and not them. >> woodruff: speaking of the new onomy and i asked cory booker about this, tam, donald trump is, at this point, he' got aod economy going into this election. what's the democrats' return message?

>> their return message, and you heard it in booker's iewer and democrats as they were speaking to union members this weekend, the message is thelo number good but does it feel good right now? the fact democrats are talkin about a $15 minimum-wage, that they're talking about childcare expenses and college expenses, and prcription drug expenses, they're keying in on aspects of american life that kmiddle class people feel that the economy isn't reflected in the numbers that are really quite good. >> woodruff: tamera keith, amy walter, "politics monday." thankou. >> you're welcome. >> woodruff: we usually think of the former dictatorships in chile and argentina when we hear about foed disappearances: civilians forcibly taken by the state, their final whereabouts unknown. buin colombia, after five decades of conflict among a

it's estimated that 83,000 people were disappeared. the 2016 peace accords between the government and the country's largest errilla group, the farc, mandated that finding the missing was a necessary step but the new unit to search for the disappeared can hardly begin its monumental job, with the current government cutting support. regardless, finding loved ones remains as important as ever for the families of the disappeared. wier the support of the puli center, special correspondent nadja drost and videographer bruno federico bring us this report. >> reporter: julio marquez's daughter, lizzeth, was 25 when paramilitary gunmen pulled her eat of a taxi. now missing for 14, her father went searching for her body at a farm where he was told she was buried. we droveast homes the paramilitaries had driven residents from, through lands they had seized, and hamlets where they murdered people-- and disappeared them. all to terrorize the people, and wield control.

marquez arrived at the farm with a team from equitas, a forensic organization that helps families of the disappeared find their loved ones. but talking to the farmers, they found lizzeth may not be the only one. >> ( translated ): locals says there's a lot of people buried here. >> reporter: the farm, it turns out, has a disturbing past. this farm is called el silencio, or "the silence," but screams used to break the silence whene it used toparamilitary base in the late 1990s. no one knows just how many civilians were brought here, detained, tortured, raped and buried somewhere on this farm. for years, marquez was threatened if he dared searched for lizzeth. two years ago, marquez came here with an ex-paramilitary fighter who said she was here. now, he tried to retrace their steps. >> ( translated ): he came and said, "look foher here, this is where she is." the paramilitary who killed here

said he gonaked, used her, and then killed her. >> repor few days later with a friend, and a shovel, but they didn't find anything. it wasn't surprising. witnesses' memories shift. terrain changes. equitas combines forensic and geo-referencing techniques to probe areas. drone footage can show changes in topoaphy. soil mineral content, changes in soil density, or sound waves, d can heermine where human remains may lie. so can cluesbout a person's st steps. marquez had been told his daughter was tied to trees before she was killed, and he led us to themnow lifeless and bare. >> ( translated ): they had her tied up for four days here, is what i was told. that people walking nearby would viar her asking for water when she sensed people by. >> reporter: around us, it felt like the bucolic landscape turned sinister. the rolling hills silent witnses to atrocious crimes,

every vale a possible mass grave. marquez is certain his daughter is somewhere on this farm but where? >> ( translated ): there's another thing, look over at that tree trunk. there were two pits there. >> reporter: years ago, the ttrmers discovered a pit two yards deep with s scattered around, but earth has since filled it. >>translated ): the bottles smell of gasoline, so it might have been used for incineration. >> reporter: for diana arango and zamir gómez of equitas, this makes >> ( translated ): one of the paramilitary's modus operandi was to extract bones and gather neskeletal remains them in spot to incinerate them, to hide them yet again. off so that equitas can return with a government forensic team to excavate. marquez ll continue to wait, for a grave, and for answers, like tens of thousands of families across colombia. while the paramilitaries disappeared people more than any , her group, over the course of 50 years of conflil

warring factions-- leftist guerrilla groups, drug cartels, state security forces-- used the tactic. those left behind suffer, in the absence of remains and answers, a never-ending grief. th the coastal city of tumaco, family members o disappeared gathered, casting their sadness in songs about husbands leaving one morning, and never coming back. ( singing in spanish ) their message to authorities is clear: look for them. now, they'reed inventing machines to look for buried treasure in the sea. we're asking, please, for a machine so you can extuman remains from the depths of rivers and lakes. m >> reportey of the

families here demanding monzón and her team excavate the truth believe the remains of their loved ones may lie nearby in anonymous tombs in tumaco's main cemetery. gravedigger james colorado points out one tomb after another marked unidentified body. but there's also less obvious places where the disappeared ma lie, like unis sidewalk. >> ( translated ): there's thousands of bodies here because when we arrived here, th a pile of remains turned to dust.he we put tin plastic over here. >> reporter: bags of bones. rema around.get shuffled incomplete cemetery records. the only way for forensic investigators to find where the disappead are is to excavate graves. at's a mammoth task. in cemeteries across colombia therfs an estimated minimum o 20,000 unidentified corpses. any reins found are brought to state forensic laboratories for analis and identification. any personal possessions that familyembers may recognize are recorded-- underwear, a shirt, a belt. in the last 12 years, the state forensic unit has exhumed 9,000

dead attributed to paramilitaries, but about half remain unidentified, stored on warehouse shelves. tens of thousands of missing are still waiting to be found.n including the maria quinchia. we followed one governmentns fo team, led by anthropologist fredy ramirez. >> ( transled ): who are you in relation to the deceased? >> ( translated ): i'm the mother. >> reporter: gravesites are often in areas that are remote, grttered with landmines, or controlled by armeps who don't want investigators to unearth their crimes. as a precaution, the military acmpanies the mission todaui whnchia got information five years ago about where her son, a member of the farc, was buried, she was too scared to come forward. but now, after the peace deal, and in the absence ofarc rebels, she leads the forensic team to an abandoned schoolhouse atop the community she fled in 2003. a year later, quinchia learned her 25 year-old son had been killed.

t >> ( translated ):s terrible to get that news, and since i was far away, i couldn't return. it was too dgerous. the violence continued until now, and look, here we are now. everything has been lost, but there's peace, like a calm. >> reporter: in this case, quinchia had detailed information, and the farc grave was quickly recognized. >> ( translated ): it doesn't matter to us if th were guerrillas or from whatever side, we have to recognize that they are hums. >> reporter: it doesn't take long to find the first remains. >> ( translated ): hello, yes, we've seen a bone and a boot, they're taking out the bones. we don't know when we're leaving here, ave maria. >> reporter: even though thison exhumas considered simpler than others because of the fact that the exact location was known and because the grave is relatively shallow this is still a monumental undertaking. it took us over six hours of hiking to get here and dusk is lling.

there's few remains, almost nothing left of the cranium, but several teeth. ( counting in spanish ) and then, ramirez hits the forensic equivalent of treasureu he askchia if her son ever had a fracture. >> ( anslated ): yes, on h right elbow ( translated ): he's got an osseo integrated implement, it's a screw. done. it's him. >> reporte it's rare to find such an identifying element that can give certainty to investigators and milies. after 14 years, quinch will finally be able to bury her son. >> ( translated ): for me, it's a relief that i know he won't be on a mountain anymore. >> reporter: theong and arduous day has left the forensics team injured and stranded in thdark on the mountain, and they need to be at a cemetery by morning.a

litary chopper takes them away, on to unearth more ofth r country's truths. from a mountaintop in antioquia state, colombia, reporting with bruno federico, i'm nadja drostb for thnewshour. woodruff: now to a rare interview with a man behind a lot of music you might have heard. t. be burnett has produced songs for major acts, films andv eries. he has an album of his own this month. and jeffrey brown sat down with him recently as part of our arts and culte series, "canvas." ♪ ♪ >> reporter:ehind the hugely fluential soundtrack for "oh brother where art thou?" which sold eight million copies and launched the surprise rise of bluegrass music as a popular phenomen.

♪ ♪ behind the unlikely, 2009 albumy of-tr pairing of robert plant and alison krauss, and recordings over the years by so many great musicians.us he's a man yolly don't see: t. bone burnett, one of music's most acclaimed producers. burnett is winner of 13 grammys, an academy award, and many other honors. and at age 71, he's just released an album of his own- musie first in 11 years.♪ ♪ he joined us recently at scholz beer garden, an austin tablishment that bills itself as the oldest operating business in texas.

>> i've never felt i had a career. i just take care of the thing u that's riger my nose. i try to choose things that connect to everything else i'm doing.k and i that's what integrity is, that your life is integrated, right? >> reporter: raised in fort worth, joseph henry burnett took the nickname "t. bone" began his career as a songwriter and performer. ♪ ♪ byd in 1975 he was picked bob dylan to join the famed "rolling thunder revue," a group of all- stars, along with then lesser- known's like wurnett. >> ias being thrown into the deep end. i arned really everything needed to know to make it through the next 50 years of my life from that experience, n because it w just performing, but it was storytelling, using different artists and different songs and different voices. >> reporter: and it was working with different artists that he made his name: roy orbison, elvis costello, counting crows-- the list is long. >> 95% of a producer's role is

support and encouragement. the way i do it is i find the best possible people i can find to do the job, and then i get out of their ways, and i support >> reporter: i've seen descriptions by musicians you've worked with where thhe're saying atessions it doesn't look like you're doing all that much. >> i'm listening.g? i think just being there as a one thing i know is all the best art is made by artists working at full autonomy and the more strings you attach to an artist, thyomore autonomy take away from him, the less able he is to make music. >> reporter: what are you listening for eventually? >> that's intuition. that's feel. it's experience, too. i'm listening for resonance, and tone, and i'm listening for the story. i'm listening for the story to get told. >> reporter: these days, burnett nts all of us to listen better. in recent years he's scored the soundtrack for the hbo show,

"true detective," filled wh moody music he created with keyboard whiz keefus ciancia and percussionist jay bellerose. >> scoring "true detective" and the complex language of "true detective" led us into this place of danger and mystery, that seemed appropriate to the subject matter. this visualization shoir new collaboration-- a new experimental album called "invisible light."th first of a proposed trilogy. burnett calls it "electronic and tribal music." ♪ ♪ >> reporter: the big subject matter for burnett these days, put forth in a full-throated critique in his keynote speech at this year's south by southwest festival, is the negative impact of information technology and so-called "surveillance capitalism."

>> we all have strings attached to us now. everywhere we go we have different technologies zero in on us, and following us, tracinr usking us, predicting what we're gonna do, and trying to actually move us into doing things that we don't necessarily want to do. e musicians have been the canary in the coal mine for all of this, right? >> reporter: in what sense? >> the surveillance capitalists confiscated our stuff first. they took our music and said "information wants to be free, so we're just gonna take our music for free."an then they made tens of billions of dollars from monetizing, in the parlance of our times, our property, that they had confiscated.

now everybody's feeling it, so people are listening n >> reporter: in the meantime, the t. bone burnett storynt ues, as always, with a variety of projects and artists. among them: producing the just-e leased album by sarah bareilles and scoring a forthcoming mus"l titled" happy trails," on the life ofro cowboy actors y rogers and dale evans. >> i don't want to do anythingte that's disconnfrom the other things. i don't want to embarrass any of the people i've worked wh in my life. i want to hold up a good standard for all of us. >> reporter: somehow, added up to a career? >> i guess you can call it thatr i think caare for lawyers. and careers are perfectly good things to have. but for me, this has just been my work. it's been my life, you know? >> reporter: for the p newshour, i'm jeffrey brown at the south by southwest festival in austin.

>> woodruff: finally tonight, we remember the oscar-nominated director and writer john singleton, who dies today after stroke. jeffrey brown is back with singleton's story, and how his work inspired others who would h swll. >> man, why you ting me? >> you're my only son and i'm not gog to lose you to no bullet. >> reporter: when john singleton's milestone film "boys n the hood" was released in 1991, it offered a lens into south los angeles that wasrd part of mainstream hollywood movies at that point, and told the story of three teens growing lt amid gang e, crime and violence.ls he was anominated for best singleton was just 24-years-old, becoming the youngest person f ever nominat an academy award for best director. he was also nonated for bestre enplay. the movie served as a launching pad as well for actors with big

cares to come-- laurence fishburne, cuba gooding jr., regina king and ice cube. in 2016, singleton explained at the austin film festival he didn't want to just write the movie when he met with executives.ai the interview d on the pbs series "on story". >> ty were testing me. they were saying, "hey what if we tell you we want to buy your script and we get somebody else to direct?" then we'll have to end this meeting now. i'm going to direct this movie. >> reporter: singleton would go on to direct other films with themes of race and social justice at their center including "poetic justice" with janet jackson, "baby boy" and "rosewood."ed he also direct a chapter of the "fast and furious" franchise. and he directed or produced many episodes of highly rd television series, including "the people versus o.j. simpson," "empire" and "snoall."

he served as executive producer for the lattlm. ker ava duvernay, the director of "selma," wrote on twitter, "his kindness lifted me up. i remember him coming to the premiere of my indie years ago. showing love/support for a fellow black director from l.a." shonda rimes, the creator of "gray's anatomy," "scaand other series, wrote on instagram thatingleton reached out to her when she was struggling in film school: "he was kindly calling to offer me some words of encouragement. he told me to ke writing. i never forgot it." at the austin film festival, singleton told young filmmakers their lens is what matters. >> it's all about that original concept on where you're from. your perspective, p.o.v. may not be for everybody, and it's valid. >> reporter: john singleton died after his life support was

withdrawn following a stroke. w 51-years-old. >> woodruff: and that's the newshour for tonight. i'm judy woodruff. e and again here tomorrow evening. for all ofnes at the pbs wshour, thank you and see you soon. >> major funding for the pbs newshour has been provy: >> babbel. a language app that teaches real-life conversations in a new language, like spanish, french, geitalian, and more. >> bnsf railway. >> consumer cellular. >> financial services firm raymond james. >> and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and financial literacy ithe 21st century.

>> supported by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and with the ongoing support of these institutions >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. captioning sponsored by newshour productions, llc ne captby media access group at wgbh access.wgbh.org >> you're watching pb

ochsendorf. hello, everyone. welcome to amaour and company. this is what is coming up. >> corporate profit or common good? measuring value in today's economy. plus -- >> i was born like this, and why should i compromise myself? >> a woman with a head for business and heart for lesbian love in the 1800s. the extraordinary new british period drama "gentleman jack" on hb, o. and then, can everyone h pe ace of the pie? investor ray dalio says that investorhood needs to be more widespread. > and also, how technology will help to rebuild notre dame and how it will help rise like a phoenix from the ashes after that devastating fire.