one of the most chilling instances the deaths of three young civil rights workers at the hands of the ku klux klan. this is the spot they were murdered. the dangers faced in those days from those who were there. during the tour of historic freedom summer sites. they told my brother he was lying. they beat him. it was an inspiring experience for 20-year-old destiny keys whose grandmother was one of the first african-americans to vote in her mississippi hometown. they leave a mark on our history. we have to celebrate them. now a generation determined to better their communities and the nation. up next our newsnation gut check. an o0 olympian champion runs th 800 meter race and she was