SELMA, AL – MARCH 4: Democratic Presidential candidate Senator Barack Obama (D-IL) (L) speaks with U.S. congressman John Lewis (D-GA) before addressing a crowd gathered for the commemoration of the 1965 Voting Rights March at Brown Chapel AME Church March 4, 2007 in Selma, Alabama. During the 1965 march, which was to go from Selma to Montgomery, Alabama, police used tear gas and beat back the marchers when they reached the Pettus Bridge. (Photo by Scott Olson/Getty Images)
