Michael Enright speaks with long-time US Congressman John Lewis who is a former leader of the civil rights movement. He recalls the epochal march for black voting rights from Selma, Alabama to the state capital of Montgomery 50 years ago this month. And Toronto filmmaker Paul Saltzman tells of going to Mississippi in the 1960s to help the civil rights cause, being beaten by a Ku Klux Klan member, and more than four decades later, trying to reconcile with the man who assaulted him.