captioning sponsored by newshour productions, llc >> woodruff: good evening. i'm judy woodruff. on the "newshour" tonight, as the country mourns this weekend's shooting at a california synagogue, we look at the rise of right-wing domestic terrorism and what federal agencies are doing to combat it. then i sit down for a conversation 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 burne, 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 and supporting institutions to promote a better world. at www.hewlett.org. >> and with the ongoing support of these institutions: and individuals. >> this program was made possible by the corporation forn public broadca and by contributions to your pbs station from viewers like you. thanyou. >> woodruff: the f.b.i. now says it's agents got a tip before saturday's attack on a synagogue near san diego, but it came too late. the bureau says it learned of a threatening social media post only minutes before a gunman

killed one person and wounded three. separately, another california g n was arrested friday, and charged with plann bomb a white supremacist rally. prosecutors say he wand to retaliate for the attacks on mosqs in new zealand. we'll explore the rise of domestic terror, after the news summary. the leader of the islamic state group has been seefor the first time in five years. abu bakr al-baghdadi appeared today in a video. he again claimed responsibility for the easter bombings in sri lanka. he said they were revenge for the loss of thlast isis stronghold in syria. in sri lanka catholic clergy are demanding a crackdown on islamit extremists aft bombings that killed more than 250 people. security forces patrolled again today as the hunt for 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 kehe people under control in absence of a stronger security program. we can't forer give them false promises and keep them calm to implement a proper program in order that the people don't tak w into their own hands. >> woodruff: in the meantime, sri lanka's president todayll bannedinds 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 anotheday 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 trigger mudslides. more than 35,000 homes and businesses are damaged or destroyed.ar in spain aight party will sit in parliament for the first eume in decades, the latest sign of a trend acrospe. supporters of the "vox" party sang and waved flags to celebrate sunday's election results. their leader defended opposition to immigration, abortion and gend equity laws, this morning. ( translated ): we are not extremists, not ultra-right or anything like that. y are saying things that are common sense for maniards, 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.e.o. dennis muilenburg spoke at the company's annual meeting in chicago. he acknowlged that bad sensor data played a role in both accidents, but he sisted it was not the only factor. >> there are a chain of ents 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.mp but the y said the warning will be activated on all planes, going forward. the measles outbreak in the u.s. is now officially the worst in 25 years. the centers for disease control atd prevention said today 704 cases have been reported so far this year. ilthree-quarters involved en

or teenagers.od on wall street, the dow jones industrial average gained 11 points to close at 26,554. the nasdaq rose 15 points add the s&p 50d three. and, former republican senator richard lugar of indiana was remembered today 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 former congressman lee hamilton on the "newshour" and warned president trump against dismissing diplomacy. >> he needs to indice 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 tarving people around th world. in other words, we really need a burst of enthusiasm for american humanitarianism, american reach-

out to other countries and other people.uf >> woo lugar served through 2012, when he lost a re- election bid to a tea party challenger. richard lugar was 87-years-old. still toome on the "newshour," the growing threat of white supremacist terrorist attacks in the u.s., i sit down with democratic presidential candidate corey booker, amy walter and tamara keith join us to talk 2020, searching for the remains of kidnapping victims in colombia and much more. ot >> woodruff: the sg at a san diego synagogue appears to be the latest in a slew of hate- driven domestic terror attacks around the nation, with the shooter leaving a manifesto praising attacks on a pittsburgh

synagogue and mosques in new zealand. with the spotlight on these types of attacks, amna nawaz explores the trump administration's strategy for preventing more. ( sirens ) >> reporter: a passoverat celeion interrupted by gunfire. the latest attack inspired by white supremacy to shake an american community. a 19-year-old gunman allegedly f opene saturday at a synagogue in poway, california tring temple services, killing one and woundinghree. eight-year-old noya dahan was one of 100 people there that day. she was hit by bullements. >> i never thought that was going to happen, because it's a safe place, you're supposed to feel safe. >> reporter: the shooter posted an anti-semitic letter online hours before t shooting. he was eventually arrested and charged with murder. at a sunday vigil, t congregation's rabbi, who lost

finger in ooting, spoke. >> this is not supposed to happen.az this isn'tgermany. this isn't a pogrom. this is right here in poway. this is our home. >> reporter: the poway shooting comes killed 50 people at two mosques a christchurch, new zealand. six months ago, wed white- nationalist killed 11 at a synagogue in pittsburgh. and a white supremacist in charleston, south carolina killed nine ack parishioners in 2015. murdered a counter protester in charlottesville, virginia after a white nationalist rally there turned violent. president trump said after there were "very fine people on both sides." before the synagogue shooting, he defended those remarks. >> i was talking about people that went because they felt vero ly about the monument to robert e. lee, a great general.r orter: across the country, meanwhile, a community mourns the loss of congregant lori

kaye, and seeks to make sense of another targeted mass attack in america. re to discuss the united states' strategy to combat domestic terrorism is nicholas rasmussen, former director of the natial counter-terrorism center-- that's the intelligence community's hub for analysis and toformation-sharing relate terrorism. he is now senior director for national security d counter- rrorism programs at the mccain institute for internationaler leip and a professor of law at arizona state university. nick rasmussen, welcome back tor the news the "newshour". >> great to be here. federal authorities say thy twartd a domestic terror aplot, multiple targets seeking retribution for atacainst museum members of community in christchurch, new zealand, inside the mosque. this is someone who is a recent convert to islam. we have the attack we saw over

the weekend, in poway. broadly speaking, explain the differences or the ways in which two cases are similar. >> well, when a case occurs like the one you just spokebout that emerged today, it's easier for fertlaw enforcement in some ways to pursue charges against the person in advance of them actually carrying out a criminal act.iv an iual who either in their online activity or in speak to an undercover person, agent of the f.b.i. that offers support for the islamic state, for example, that is enough to bring them into legal jeopardy and to give the f.b.i. ole suitety to use a wh of investigative tools. on the other hand, the individuals who carried out thea attack ainst the synagogue in california is a harder problemr w enforcement. that individual may not have taken any steps or engaged in any behavior before the actual attack that would have alllaowed enforcement to actually engage in investigative behavior, and that's somewhat of

a distinction between domesc terrorism on the one hand and international terrorism on the other hand. a distinction that may not make sense the current environment. >> so what needs to change within the system to address that? >> oneadea ths been talked about and i think it's worth looking at is whether there might be some creation if not a domestic terrorism statute, at least including these types o domestic terror incidents in our orism steachts that woul perhaps allow the phish at an earlier stage to be more intrusive with their investigative techniques and to bring more invesgative techniques to bear rather than simply waiting -- not to sugthst f.b.i. is waiting for violence to occur, but the f.b.i. is often hamstrung in their ability to get in front of attacks e.ike thes >> so the patriot act that gives folks authority to lok into some of those cases, it givesoa authority to the justice department. there's pushback against theid you propose that says if you include more cases under

that umbrella of terorism, you're basically broadening a group of people that can be investigated by their o government. what do you say to that? >> of course, that's a concern. you would have to put parameters around this authority if yourg opinion go give it to federal law enforcement because we would not want to create a situation in whch legitimate expressions of free speech even if deemed offensive by a vast majority of americans, we don't want to create a situation where esese tools chill free speech. >> there are ingative tools and prosecutorial tools to address this. in charlottesville, he pled guilty to a federal hate crime. the charleston, south carolina shooter, therefeere a host of ral and state crimes he was convicted of. why create a new statute? why is that necessary? >> two reasons. one is pure moral equ terrorism to me is terrorism. when someone carries out at violt aimed against innocent civilians for if you were of advance ago politial

agenda, to me that satisfies the definition of terrorism. whether the ideology that motivates that is i.s.i.s., j al quaidadist ideology or some awful, hateful whiementsest or anti-semitic agenda. so there's a moral equivalence we would establish if we had the 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 ds ofency of these kin events. so i would want to give f.b.i. the ability to intervene and to be more aggressive investigatively at a 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 we seeing the uptick? >> that's the million-dollar question. you can point to the broader potical environment not jut here in the united states, it's

globally, where groups or individuals who feel aggrieved, disadvantaged or downtrodden will look for some other group, some other ethnic or religious w group ch to lay at the feet the responsibility for their particular situin life. so the kind of aggressive political narrative we're seeing around the world that looks to amplify these grievances is adding to the fire. >> has the federal government done all it can? >> i think there's more to be done and i think e trump administration should be given threat c.t.e. in their counterterrorism strategy published last year, they pointed to domesmstic terro that needs to be addressed. saying it in a strategy document u different than ptting into practice programs, guiding resources to the relevantme depas and agencies, prioritizing this among other thsues. >> hav done any of that.

that remains to be seen. you've not seen that. not nearly enough in this area. >> nick rasmussen, thank you so much for being here today. >> it' great to be here, thank you. >> woodruff: as the field of democratic candidates for president grows, so, too, does the map of key states they are visiting. lisa desjardins takes a look. >> reporter: today in pisburgh, former vice president joe biden's first speech as a currenpresidential candidate. >> the country wasn't built by wall street bankers, c.e.o.'s it was built by you. it was built by the great american middle class. >> reporter: choosing his native pennsylvania, biden aimed to show he can win with frustrated, swing voters.to >> if i'm goine 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 nada this weekend, a handful of democrats made similar overtures to working class voters at ceunion confern las vegas. >> we must get a $15age. >> reporter: minnesota senator amy klobuchar. >> we're strongest when we stand together. >> reporter: massachusetts senator elizabeth warren. >> there is a direct correlation between the concted attacks on organized labor and the increase >> reporter: alsthere: 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. i his plan uses tial government investment to spark private spending. in the meantime, new jersey senator cory bootir took his "j for all" tour, focused on criminal justice reform, to florida. 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 race, biden scored his first big win-- the endorsement of the international association of firefig >> 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-- homm y white, working class voters. biden and president obama won those three states both in 2008 and 2012. but in 2016, president trump flipped them red. and mr. trump is figto keep that bloc. over the weekend, mr. trump heln a rally in greay, wisconsin. he told the manufacturing state that the japanese prime minister privatelpledged to invest billions in new car factories. >> they're coming back. they want to be back to ohio.

to pennsylvania. >> reporter: and today, mr. tr inaugural speech ins pennsylvania, touting the state's steel industry a. strong econo it is likely the first of many visits to the state by both the former vice president and the president. for the "pbs newshour," i'm lisa desjardins. >> woodruff: senator cory booker is one of 20 democratsompeting for his party's presidential nomination. he just wrapped up his two week long "justice for all" tour and he joins us now. senator booker, welcome. senator booker, welcome to the "newshour"er >> thank youmuch. it's good to be here with you. >> woodruff: so as we said, you're one of the 20.k i th's fair to say a number of voters out there are overtrelmed. they'rng 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 tngs distinguish me. one is a very different career than the others in the race. was a chief eutive 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 goingro h its biggest expansion economically, going through the biggest transformation of the school system and e. 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 major bipartisan legislation that passed under this president was legislation i ran on the democratic side with dick durbin for criminal justice reform. so getting thingsone 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 n a fire department, that's not a good

strategy. we wave to define ourselvat we're for, not just again. we need a revival ofiv cic grace and call to our hig angels, not fighting donald trump on his own turf and ter. >> woodruff: speaking of the things you're for, one of the things you're talking about in your justice for all to, expanding the earned income tax credit, something originally conceived to helworking poor. you're talking about greatly expanding it so couples eaing 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 original purpose of it, which is to help the woing poor? >> well, i don't think so. i think families often making dual income, people making under $90,000 a year are feeling the everyts going up from ngueeze. prescription drugs to childcare. we have a nation now95 wher% of baby boomers did better than s.eir pare for millennials now down to 50%.

we have a nation who could see the first generatioto do better than the one before, 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 trillions of dollars of holes in our deficits anind ng some of it is going to trickle down to working people, let's just give working americans making $50,000, $40,000 a year or couples making twice that more of a direct return on their taxes. >> woodruff: as we sai this would cost $2.5 trillion over a decade. you also want to raise the minimum-wage, you wante that raised $15 an hour.to sewarren wants virtually free public college. she talked about a federal daycare program. beto o'rourke is talking about a $5 trillion climate change plan and on and on. a lot of this ispular but voters are going to be asking 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 pesrson buy a picasso and sells it for $10 million, they're paying less than that -s for that than a janitor or factory worker. they should be taxed at the same rate. that will bring in over a trillion dramplets rolling back the trump tax cuts. moving back the capital gains tax to where it was in the crazy days of the obama era can bring in a trillion dollars an hour. we can dohings we dd in my grandparents generation that has a tax rate that's fair in terms of creating more growth for everyone. >> woodruff: is there a simple democratic message? you've got president trump saying, look, and this is if the economy stays where it is right now, the e conomy icontinuing to grow, we've got full employment, stock markets are roaring. what's the democrats' simple to

derstand answer. >> you can have 20 different people telling you what's that is. my simple aner is we're at a point in our society where theuc indices ofss don't speak to the average american. the stock market ticke g.d.p. numbers don't speak to people in my community. i work in a wrking class community where people work at full-time jobs still uood stamps. do you think they care what the stock market or g.d.p. numrs are. no. i'm not demonizing peoalple of . why are we gearing the tax code to help people of wealth get more wealth. we put 0 5llion in the tax code moving wealth up. why aren't we going things to make sure people working every day in america can have ame ican dream? that's the problem we have now. there seems to be a lack of empathy and more courageous empathy is needed in our country to see the strugs of pople from

factory towns to farm towns who can't afford th rent in cities because cost is so high. >> woodruff: you favor the medicare for all plan introduced by senator sanders. in essence, it's single payer. it will within four years do away with all private healthe. insura your state of new jersey in november elected new members of congress, democrats, heavily republican districts. do you think voters in thoseri dis want to see their private health insurance go away? >> i'm a pragmatist. i ran a city and had to try to bend the cost curve of healthcare the way we're doing it doesn't work. i'm for medicare but we can't awt there righay. we need to 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 privatet maecause more older people would come into the publicon op

so there are pragmatic steps to take to accomplish goals, exnding healthcare, lowering costs. >> woodruff: a few other things in your justice for all plan. you've long worked on criminal justice issues. you want to give convicted felons the right to vote, as i'm sure you know senator sanders sad they should not only have the right to vote when releaseda they shoul the right to vote when incarcerated. do you aee? >> that's a frustrating debay. as a guy who lives in an inner city black community and know there are millions of americans being arrested andan convicte should never be there in th first and not only lose their right to vote but their liberty. our prison population in this country has gone up 500 percent since 1908 alone. we locked up more people forju maa in 2017 than all the violent crmes combined.

we're imprisoningeople for doing what the last two presidents admitted to doing. my focus is liberating black and brown and low income people from prison becse we have a system in america that treats you bet for you're rich and guilty than if you're poor and innocent. my focus iswn tearing he system of mass incarceration to ohat we don't even have to have the debate abut people's voting rights because they're not going to prison in the first plce. people that don't belong there are there and i'm going to stop that as president. >> woodruff: senator cory booker, we'll be following you on the cpaign trail. >> thank you. >> woodruff: let's bring in the analysis of our regularay "politics modo you o amy walter of the "cook political report" and host of politics with amy walter on wycn radio and tamera keith, co-host of the npr politics podcast. hello to both of you. it's politics monday. u've just heard from one of the 20 candidates for the democratic nomination, amy.

what's your reaction to what the cory booker is saying? a cory booker, it's fascinating because he talket in that interview with you about his time as a mae or and his timas an executive. but, of course, now, he's a setor, and thre's another young mayor who's getting a whole lot of attention need pete buttigieg. i wonder how much it would be better for cory booker to b actual running as mayor of booker when he was mayor rather than senator booker. >> wdruff: 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 had 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 in an executive there, namelfolks from silicon valley or finance, folks in the charter school emovement. sos, in many ways, has a

similar path to what pete buttigieg has had, but he does not have the shine that pe buttigieg did in part because he's now part of washingtonnd also because of all the times that the criticism has had to build up for his record as a mayor. >> woodruff: what do you make of his message? >> one thing that stood out is that he is, i thi, 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 wit re. i don't think we need to do that in this campaign. he has definitely chsen a different path which is to be sort of a calmingresence on the campaign trail, someone who, you know, his campaign lanch video had the drummers and it was all about, you know, america cabe this great place where we come together and we have civic

grace. >> woodruff: and we watch him od we're, ofrse -- 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 sharing seventh place. you don't even see him on these numbers we're putting up here from "the washington post"nd abc, amy, but that's better than about a doz of the other democrats. what's interesting here is joe biden is at 13%, but opinion 47%. joe biden just rolled out ad, granted, this poll was wrapping up as he was announcing, but what does that say about what democrats want? >> one really important things to know about this poll especially compareto other polls, they asked you aso alled open sended question where they asked who would you support for president and you have to putrd a name. they're not reading a list of names for you toay, yes, i've heard of this person, i will support that person. so this is reallliterally for people who have enough knowledge about the field and who's

running and gives an indicatione of whey are. but that also says to you, for somebody like joe biden or bernie sanders who do have m almostn% name identification, they're not rolling off the top of people's tongues asf course its this person to serve as president. it is amazing to me, too, to ink the field could still be growing. i can't believe it either, but the are still a number other high profile or at least high level democratic officials, senators andovernors thiing about jumping in. so those two canoedidates, biden and bernie sanders, not really scaring anybody out of this race. >> woodruff: but biden is in the race, now, tam, and are wege ing an overwhelming sense of why he's running? is his message coming trough? >> he gave a speech today in pittsburgh and he had three pillars to why he was running.pi the threlars, and i'm going to get the words wrong here, and hopefully i'll remember allh three, but three pillars were basically taking on

president trump and, you know,tu ing america's reputation. the second was an economic message about rebuilding america's backbone. the third was abo bringing americans together. so he came out, he had a stu speech. you know, the thing about biden, he got into the race late compared to some of the other candidatesbut he came out with a fully-fledged campaig he is immediately acting like a frontrunner in that he has a large staff and had this big fundraising push, and he's coming ouou 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 that hearing all these years ago, an this is not go be the last of times that joe biden is going to have to answer questioth aboungs that happened, you know, before some voters were ever born.>> here was something about that speech today, too, in pittsbgh, there was a nostalgia there for a time when

biden was firngst runni but, also, it sort of sounded like a donald trump speech in somely ways, obviovery different, two very different people, 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 party, 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 they had been left behind by the new economy and the democratic party obsesd with silicon valley and the coast and not them. >> woodruff: speaking of the new econy and i asked cory booker about this, tam, donald trump is, at this point, he's got a gd economy going into this election. what's the democrats' return message?

>> their return message, and y heard it in booker's interview and democrats as th were speaking to union members this weekend, the message is the g numbers lood but does it feel good right now? the fact democrats are talking about a $15 minimum-wage, that they're talking about childcare expenses and college expenses, and prescription drug expenses, they're keying in on aspects of american life that make middle class peoe feel that the economy isn't reflected in the numbers that are really quite good. am woodruff: tamera keith walter, "politics monday." thank you. >> you're welcome. >> woodruff: we usually think of the former dictatorships in chile and argentina e hear about forced disappearances: civilians forcibly taken by the state, ther final whereabouts unknown. but inolombia, 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 guerlla group, the farc, mandated that finding the missing was a necessary step but the new unit to seor the disappeared can hardly begin its monumental job, with the current government cutting support. loregardless, finding theid ones remains as important as ever for the families of the disappeared. support of the pulitzer 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 out of a taxi. now missing for 14 yher father went searching for her body at a farm where he was told she was buried. t homes the paramilitaries had driven residents from, through lands they had seized, and hamlets where they murded people-- and disappeared them. all to terrorize the people, and wield control.ue

maarrived at the farm with a team from equitas, a forensic organization that helpfamilies of the disappeared find their but talking to the farmers, they found lizzeth may not be the only one.at >> ( tran ): locals says there's a lot of people buried here. >> reporter: the farm,rns out, has a disturbing past. this farm is called el silencio, or "the silence," but screams used to break the silence whenpa it used to be military base in the late 1990s. one knows just how many civilians were brought here, detained, tortured, raped and buried somewhere on this fm. 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 for her here, this k where she is." the paramilitary wled her

said he got her naked, used her, and then killed her. >> reporte 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 chniques to probe areas. drone footage can show changes in topography. soil mineral content, changes il ensity, or sound waves, can help determine where human remains may lie. so can clues about a person's last steps. marquez had been told his daughter was tied to trees before she was killed, and he led us to them, w lifeless and bare.>> translated ): they had her tied up for four days here, is what i was told. that people walking nearby would hear her asking for water when she sensed people moving by. >> reporter: around us, it felt like the bucolic landscape turned sinister. the rolling hills silent witness 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 farmers discovered a pit two yards deep with bottles scattered around, but earth has since filled it. >> (anslated ): the bottles smell of gasoline, so it might have been used for incineration. >> reporter: for diana arango and zamir gómez of equitas, thi. makes se >> ( translated ): one of the paramilitary's modus operai was to extract bones and gather skeletal remains them in one spot to incinerate them, to hide em yet again. >> reporter: the team marks it off so that equitas can return with a government forensic team to excavate. marquez ll continue to wait,fo a grave, and for answers, like tens of thousands of families across combia. while the paramilitariespe disappearele more than any other group, over the course of years of conflict, allin

warrfactions-- 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. in the coastal city of tumaco, family members of th 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. >> ( translated ): now, they're inventing machines to look for buried treasure in the sea. we're asking, please, for a machine so you can extract human remains from the depths of rivers and lakes. >> reporter: many of the

families here demanding monzón and her team excavate the truth believe the remains of their loved ones may lie nea anonymous tombs in tumaco's main cemetery. grav points out one tomb after another marked unidentified body. but there's also less s places where the disappeared may lie, like under this sidewalk. >> ( translated ): there's thousands of bodies here because when we arrived here, there s a pile of remains turned to dust. we put them in plastic over here. >> reporter: bags of bones. remains that get shuffled y ound. incomplete cemetcords. the only way for forensic investigators to find where the disappeared e is to excavate graves. that's a mammoth task. in cemeteries across colombia there'an estimated minimum of 20,000 unidentified corpses. any remains found are brought to state forensic laboratories for analys and identification. any personal possessions that family mbers may recognize are recorded-- underwear, a shirt, a belt. in the last 12 years, the state forensic unit has exhu000

dead attributed to paramilitaries, but about half remain unidentified, stored on warehouse shelves. tens of thousands of missing are ofill waiting to be found. including the soaria quinchia. we followed one governmentic foreeam, led by anthropologist fredy ramirez. >> ( translat ): who are you in relation to the deceased? >> ( translated ): i'm the mother.ep >>ter: gravesites are often in areas that are remote, littered with landmines, or controlled by armed grho don't want investigators to unearth their crimes. as a precaution, the military accompies the mission today.nc when quihia got information five years ago about where her son, a member ofbuhe farc, was ed, she was too scared to come forward. but now, after the peace deal, and in the absence of fa 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.

wa ( translated ): i terrible to get that news, and since i was far away, i couldn't return. it was too danrous. the violence continued until now, and look, here we are now. everything has been st, 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 theyere guerrillas or from whatever side, we have to recognize that they are human >> 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 thiss exhumationnsidered 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 x hours of hiking to get here and dusk is falling.

there's few remains, almost nothing left of the cranium, but several teeth. ( counting in spanish ) and then, ramirez hits the forensic equivalent treasure. he asks quinchia if her son ever had a fracture. >> ( trslated ): yes, on his right elbow (:translated e's got an osseo integrated implement, it's a screw. done. it's him. >> reporter: is rare to find such an identifying element that can give certainty to investigators and families. after 14 years, quinchia 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: the long and arduous day has left the forensics team injured and stranded in the dark on the mountain, and they need to be at a cemetery by morning.li

a ry chopper takes them away, on to unearth more of their country's truths. from a mountaintop in antioquia state, colombia, reporting with bruno federico, i'm nadja drost for the wshour. >> woodruff: now to a rare interview with a man behind a lot music you might have heard. t. bone burnett has produced songs for major acts, films ands ies. he has an album of his own this month.ow and jeffrey sat down with him recently as part of our arts and culture series, "canvas." ♪ ♪ >> reporter: behind the hugely uential soundtrack for "oh brother where art thou?" which sold eight million copies and launched the surprise f bluegrass music as a popular phenomenon.

♪ ♪ behind the unlikely, 2009 album of-the-yiring of robert plant and alison krauss, and recordings over the years by so uany great musicians. he's a man you y 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 music-- the first in 11 years. ♪ ♪ he joined us recently at scholz beer garden, an austinta ishment that bills itself as the oldest operating business in texas.

>> i've never felt i had a career. i just take care of the thingnd that's right my nose. i try to choose things that connect to everything else i'm doing.th and i thin's what integrity is, that your life is integrated, right? >> reporter: raised in fort worth, joseph henry burnett took ndthe nickname "t. bone" aegan his career as a songwriter and performer. ♪ ♪ bd in 1975 he was picked ob dylan to jn the famed "rolling thunder revue," a group of all- stars, along with then lesser- known's li w burnett. >> being thrown into the deep end. i lened really everything i needed to know to make it through the next 50 years of my life from that experience,ot because it wasust 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, andport >> reporter: i've seen scriptions by musicians you've worked with where they're saying at the sessions 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, the u re autonomy ke away from him, the less able he is to make music. >> reporter: what are listening for eventually? >> that's intul.ion. that's f 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 was all of us to listen better. in recent years he's scored the soundtrack for the hbo show,

"true detective," filled with 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 thet subjtter. this visualization shows their new collaboration-- a new experimental album c "invisible light." the first of a proposed trilogy. burnett calls it "electronic and tribal music." ♪ ♪ >> reporter:he big subject matter for burnett these days, put forth in a full-throated critique in his keynote speech at this year's southt y southwstival, is the negative impact ofnonformation tegy and so-called "surveillance capitalism."

>> we all have strings attached to us now. everywre we go we have different tenologies zero in on us, and following us, tracinc us, ng us, predicting what we're gonna do, and trying to actually move us into doing things that we don't necessarily want to do.th musicians have been the canary in the coal mine for all of this, right? >> repter: 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."d en 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 now. >> reporter: in the meantime, the t. bone burnett storyin cos, as always, with a variety of projects and artists. among them: producing the just-e reased album by sarah bareilles and scoring a forthcoming musical tled"pp trails," on the life of cowboy actors roy rogers and dale evans. d i don't want to do anything that's disconnecom the other things. i don't want to embarrass any of the people i've worked witin my life. i want to hold up a good stdard for all of us. >> reporter: somehow, that's added up to a career c >> i guess y call it that. i think careers are for lawyers. and careers are perfectly good things to ha. but for me, this has just been my work. it's been my life, y know? >> reporter: for the pbs newshour, i'm jeffrey brown at the south by southwest festival in austin.

>> woodruf remember the oscar-nominated director and writer john singleton, who dies today after a stroke. jeffrey brown is back with singleton's story, and how his work inspired others who would follow him. >> man, why you sweang me? >> you're my only son and i'm not gointo 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 s angeles that was hardly part of mainstream hollywood movies at that point, and told the story of three teens growing up ae,d gang cultrime and violence. he was also nominated for best singleton was just 24-years-old, acoming the youngest person ever nominated facademy award for best director. he was also nominad for besten scplay. the gvie served as a launchin pad as well for actors with big

careers 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. the interview aired on the pbs series "on story". >> they were testing me. they were saying, "hey what if ywe tell you we want to br 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 cosewood." he also directed ahapter of the "fast and furious" franchise.ec and he dted or produced many episodes of highly regarded television series, including "the people versus o.j. simpson," "empire" and "snowfl."

he served as executive producer for the latter. filmmaker ava duvernay, the director of "selma," wrote on twitter, "his kindness lifted me up. i remember him coming 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," "scandd other series, wrote on instagram that sgleton reached out to her when she was struggling in film school: "he was kily calling to offer me some words of encouragement. he told me to ke writing. i never forgot it."ti at the afilm 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 rybody, and it's valid. >> reporter: john singleton died after his life support was

withdrawn following a stroke. he was 51-years-old. >> woodruff: and that's the newshour foronight. i'm judy woodruff. join us on-line and again here tomorrow evening. for all ofwss at the pbs ur, thank you and see you soon. >> major funding for the pbs newshour has been provided by: >> babbel. a language app that teaches real-life conversations in a new language, like spanish, french,t germanian, 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 in the 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 foru ic broadcasting. and by contributions to your pbs station from viewers like you. thank you. captioning sponsored by newshour productions, llc captioned by media access group at wgbh access.wgbh.org >> you're watching pbs.

♪ ♪ ♪ ♪ -today, on "america'test kitchen," we'rbraising everything. dan makes julia delicious braised oxtails. adam reveals his top pick for dutch ovens. and becky shows bridget a foolproof recipe for va beans with artichokes a. it's all coming up right here on "america's test kitchen."