WASHINGTON, DC – AUGUST 28: President Barack Obama (L) stands with his wife Michelle Obama (2nd-R) and former presidents Jimmy Carter (2nd-L) and Bill Clinton (R) during the ceremony to commemorate the 50th anniversary of the March on Washington for Jobs and Freedom August 28, 2013 in Washington, DC. It was 50 years ago today that Martin Luther King, Jr. delivered his “I Have A Dream Speech” on the steps of the Lincoln Memorial. (Photo by Mark Wilson/Getty Images)