Former first lady Laura Bush, left, first lady Michelle Obama, President Barack Obama, Rep. John Lewis, D-Ga., former President George W. Bush, and Rep. Terri Sewell, D-Ala., hold hands during a prayer after the president's speech by the Edmund Pettus Bridge in Selma, Ala., on the 50th anniversary of “Bloody Sunday," a landmark event of the civil rights movement, Saturday, March 7, 2015. (AP Photo/Jacquelyn Martin)