plus, folk legend joan baez on her fair thee well tour and her lifelong activism. >> announcer: amanpour on pbs was made possible by the generous support of rosslyn p. walter. >>> good evening, everyone and welcome to the program. i'm christiane amanpour in london. left shouts at right, right shouts at left but on guns could a group of high school students turn tragedy into breakthrough? president trump today appears if only inincrementally to want to act on gun control. listen to what he said. >> i called many senators last night, many congressman, and jess and pam and everybody in this room, i can tell you curtis, they are into doing background checks that they won be thinking about maybe two weeks ago. we're going to do strong background checks. we're going to work on getting the the age up to 21 instead of 18. we are getting rid of the bump stocks and focusing strongly on mental health. >> this comes a day after he was confronted by a father andrew pollack whose daughter meadow was shot and killed last week at the school. pollack poured his sadness and the frustration shared by milli