A plaque describes the 1965 Voting Rights Act at the base of the Edmund Pettus Bridge, where route 80 crosses the Alabama River, on March 4, 2015 in Selma, Alabama. March 7, 2015 will mark the 50th anniversary of Bloody Sunday where civil rights marchers attempting to walk to the Alabama capitol in Montgomery for voters' rights clashed with police on the Edmund Pettus Bridge. AFP PHOTO / BRENDAN SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
