New York Senator Hillary Clinton gestures to the crowd at th

UNITED STATES - MARCH 04: New York Senator Hillary Clinton gestures to the crowd at the First Baptist Church in Selma, Alabama, on Sunday, March 4, 2007. Forty-two years after club-wielding state troopers charged into a crowd of 600 peaceful demonstrators in Selma, Alabama, a rampage that changed U.S. history, veterans of ``Bloody Sunday'' gathered to commemorate that defining moment in the civil-rights movement. (Photo by Chris Rank/Bloomberg via Getty Images)