ukrainians' lives, and that each of the other producing them of havi connections to big business. zelensky said poroshenko avoided military service at a time when ukraine needed it soldiers most. getting personal and heated, and you could see that on people's faces. both the candidates, professionals obviously, but taken back by the intensity of the moment. carl: that emotion will take voters to the polls on sund nick connolly, thank you. let's take a look at some of the other stories making news. thousands have live -- lined streets in lima, paying respects to the former president alan garcia. his coffin was being transported the site of his funeral taking place today. he died wednesday of a self-inflicted gunshot wound as per pace -- police prepared to

arrest him on gunshot charges -- corruption charges. people demanding action on climate change. the 16-year-old activist greta thunberg spoke at a place in rome. the group extinction rebellion tried to disrupt london's airport and greenpeace blocked the paris headquarters of a french bank. hundreds of thousands of antigovernment protesters have parlayed in algiers. they succeeded in ousting bundesliga earlier this month. now demonstrators are demanding further reforms and complete change in the country's leadership. hundreds of protesters in sudan's capital havave taken pat in friday prayers as they continue their sit in outside the defense ministry. demonstrators are pressuring the government counsel to hand over power to civilians. months of protest helped to

depose the former president last week. now to northern ireland where the people of londonderry have been removed bring a 29-year-old woman shot dead during an overnight riot. police identified her as journalist lyra mckee. cities -- citizens of the town have held a vigil. her death is being treated as terrorism. the new ira are t the new suspspects. police searched a local house. she was standing near a police car when a gunman opened fire. thursday night violence came 21 years after the signing of the good friday agreement that largely ended the catholic-protestant fight. members -- memories of the troubles are slow to fade. reporter: john donnelly is a former ira fighter.

in his home is a collection of treasures from decades of warfare known as the troubles. the british soldier's belt bag contains a list of wanted ira members. >> this guy here is my dad. he was an ira informer. he was an informer. mark mcguinness. reporter: m martin mcguinness ws the former provisional ira leader but tn the chieief negotiator for the good fridayy agreement 21 years ago. for over three decades of they fought british rule in northern ireland. john donnelly was a leading political force in derry, northern ireland's second-largest city. he was instrumental in preventing -- persuading people to lay down their arms.

21 years on the conflict seems to have been settled but for many it is a superficial arrangement. four areas of derry are still waiting for the peace dividend to kick in. >> the peace agreement until now, there has been no tangible -- there is nothing people could publish. you could go around saying, look, that was, that is what has happened. [indiscernible] reporter: in the rosemount community center, the former ira front is a show for worker helping those worse off. all former fighter, they share one of the hardest jobs. their binders are full of brutal stories. donnelly s shows a particularly telling file. >> t this is ted was sheetet.

the client's name, where he lives, and what age group, nature of death, expulsion, beaten, in this case it was expulsion from the city. reporter: to punish antntisocial behavior, radidical elements impose vigilante justice in the poorer areas of derry. this is a hold over from earlier times when the ira police neighborhoods. the traditional radical irish nationalists are carrying on today. a mother and her son visit the community center. they want to remain anonymous. the boys accused of stealing a car. his punishment is to be shot in the leg. donnelly is trying to mediate. >> i had talked to people who issued the threat, because

[indiscernible] we are going to know right letter. -- now write a letter. reporter: that could mayaybe avt the looming threat. it is a typical day at the rosemont community center, showing that peace has not returned, 21 years after the good friday agreement. carl: it has been 20 years since the shooting at columbine high school in the u.s. where two students armed with high-powered guns killed 13 people. the name of the school is littleton, colorado and it became known. it is joined by other locations with tragic histories like sandy hook and parkland, but columbine is remembered as the start of america's modern era of school gun violence. reporter: scenes that have

become too familiar played out for the first time april 20, 1999. the students who ran from the horrors of t the mass shshootint columbine high school in littleton could hardly have known so many others would follow in their footsteps. 12 students and one teacher died that day at columbine as wewells the two disaffected teens who executed the massacre. survivors brought shocking stories of random cruelty inside. >> started screaming and crying and telling him not to shoot me. so he shot the girl, shot her in the head in front of me and he shot the black kid because he was black. and he shot him in the face. reporter: they prayed it would never happen again. the response from then-president bill clinton became a script to often repeated by other leaders. -- too often repeated by arthur

-- other leaders. >> the prayers of the people are with you. reporter: since columbine there have been the -- more than 100 similar incidents. students have had enough of politicians' thoughts. >> thank you for your thoughts and prayers, but it is not enough. the same thing again and again. we say stop it today. reporter: last year' shooting at mamarjorie stoneman douglassss h school in portland set off a otest over r decades of popolitical inactioion over gun viviolence. students ask you what -- organized nationwide marches. some states have passed tougher loss but little has changed in washington. president donald trump has banned bump stocks that makes semi-automatic gun of his fire

faster but has promised to veto a bill that would tighten background checks on gun buyers. two decades on, the name columbine still represents an unresolved american tragedy. carl: joinining me now from san diego, california is dr. reed malloy, a psychologic -- he has worked for the fbi for the past 18 years as well as -- thank you for joining us. the columbine school shooting was two decades ago, but its influences has lasteted until todaday. why is t that? >> the columbine event that occurred 20 years ago really became a very momentous event in the history of the united states and has fostered a number of copycat cases since then.

there have been upwards of 80 different individuals over the past 20 years that have either attempted to mount an attack or have succeeded in doing that, where they have said they were directly insnspired by the offee at columbine -- events at columbine. it was a watershed event in american crimiminality. carl: i was in high school in the u.s. when this took place. i remember how shocking it was.. what effect do you think it has had on that generation of students and on the country as a whole? > it has had a huge effect on the younger generation. one of the markers, following the parkland attacks last year when there was a search of young americans. interested in changing the access, very easy access to high-powered -- still is a huge

problem. the newer generation grew up with columbine as an event in history. in a sense, it normalized school attacks could happen anywhere although the reality is they are still very, very infrequent in the u.s. despite the press coverage of such. nevertheless, these arare horrie events and i think the younger generation as demographics shift toward a y younger geratatio wee wiwill seeee a substantitial chn various ways to keep people safer. carl: you have e mentioned since columbine there have been dozens more mass shootings since that time in 1999. many of the perpetrators did i like the shooters in columbine. how did these two students essentially become cult figures?

>> that is an excellent question that i don'tt have an easy answr for. part of it was what they didid s very uniququat the timee. ththey would mount an attack suh as this, using both firearms as well as attempting to use bombs at the school to actually create an event that was just as catastrophic as an event that had happened four years earlier, almost on the same day, the oklahoma city bombing april 1 1, 1995. part of f the plan w was to do e oklahoma city bombing one better. that is what we see in these youngg perpetrtrors is thehey follow closely individuals that preceded them and carriri out ask a violence and admire them but also want to do them one better.

the dynamicscs in these cases is the e way they do this one e ber is to have more casusuties as well as do something innovative. at the time of columbine, both the innovation and casualties and the locatioion of the shooootings made a huge impressn and horrified most people but for some adolescents and young adults, who felt disenfrananchid , who felt not a part of the fabric of their school or commununity, this becacame in a sense an antihero identification. theyey were drawn to these figures, wanting to be like them and make a mark. carl: that footage of columbine and the students streaming out, that was played on repeat for hours, days, decades. what about now in terms of the advent of social media, live

streaming video? has that changed things? >> one of the things it has done is a accelerateded these cases r the past eightht to 10 years. that there has been fbi studies and one that harvard public health did concerning the uptick in numbers of cases. social media really in a sense becomes accelerant. itit becomes a vector that can carry this contagion and to other young minds. i think there also is now a much greater awarereness of the i imt of s social media a and commercl media covering these events. there has been substantitial changess by the memedia. the photo of the pertrator is not publisheded as widely as thy used to be. they are notot shown in some

element whe e theyre p posing with theheir weapopons, some kif camouflage o outfit thatat glors their pseudo-commando presesentation. seeing the video loooops played overer and over again, one of te striking exampmples of what happened in christchurch, new zealand in the last month, where we did not see in the commercial media videoeotaping, the live streaming g of the masassacre tt occurred then. you see actually -- you saw it muted reresponse to thee perpetrator himself. we are seeing important joints -- important changes. carl: thank you so much for joining g us. >> thank you very much. carl: shifting gears to tennis and rafael nadal has made it to the semifinals of the monte carlo masters by beating argentina's guido pella, but

novak djokovic tool not be challenging this time around. he crashed out of the tournament in the quarterfinalsls. repoporter: for daniel medvedevt was a day to remember. he had ost all three of his previous matches a against novak djokovic, but in the montnte cao soson, he gave his illustrious opponent the runaround. this point helped him break djokovic's serve for a second time and claim the first set. he must t have known it would nt be smooth saililing throughout. in the second set djokovic's quality showed. the served leveleled the scorert one set each. but that was as s good as it got for thee reigning champion of ththree of the four r grand sla. medvedev dominated the final set. he m maneuvered djokovic around the court and then hit a thumping backhand to seal the

victory. the world number 13 sees it aa site h he is heading in the rigt direction and djokovic woululd agree. >> i am getting more experienced. i am starting to make this top guys know that it is tough to play against me. reporter: medvedev will now face lie of which -- liavich. carl: a reminder of the top stories we are following. in the united states the house judiciary committee has issued a subpoena to obtain the full russia of investigation report -- russia investigation report. they have so far only released a redacted version. the court said there was insufficient evidence the trump campaign colluded with moscow. a vigil held for a woman shot dead in a riot in northern ireland 21 years after the goods friday piece deal.

-- the good friday peace deal. people describe her death as terrorism. you can always get dw news on the go or download our app from google play or the apple store and get access to all of the news of from around the world and push notifications and breaking news. you can use that dw app to send us photos and videos. you are watching dw news from berlin. coming up next, i will be back to walk you through the day's headlines with "the day." ♪ [captioning performed by the national captioning institute, which is responsible for its caption content and accuracy. visit ncicap.org]

. dissident republicans. the first total story election campaigning grinds to a holes in ukraine this friday ahead of sunday's presidential runoff pitching in common petro poroshenko. i guesss not a missile in ski i comedian with no political experience. well early this evening the two candidates held an extraordinary stadium debate whether paspalum topics including the lack of political experience campaign promises. the one year old