WASHINGTON, DC – AUGUST 24: People arrive at the National Mall to celebrate the 50th anniversary of the March on Washington and Dr. Martin Luther King, Jr.’s ‘I have a Dream’ speech on the National Mall on August 24, 2013 in Washington, DC. A commemorative march and a rally along the historic route followed in 1963 is led by civil rights leaders Al Sharpton and Martin Luther King III. (Photo by Pete Marovich/Getty Images)