PBS Newshour: 'I Felt That We Had to Be Tough': John Lewis Remembers the March on Washington

Fifty years ago, 23-year-old John Lewis raised his voice to a crowd of more than 200,000 people at a protest march that would come to represent "the best of America." Gwen Ifill talks to the congressman about what motivated him to become a young civil rights leader and the current state of civil rights and equality in America.