First lady Michelle Obama hugs Arndrea Waters, wife of Martin Luther King III, son of Martin Luther King Jr., as their daughter Yolanda Renee King looks to the crowd at the Let Freedom Ring ceremony at the Lincoln Memorial in Washington, Wednesday, Aug. 28, 2013, to commemorate the 50th anniversary of the 1963 March on Washington for Jobs and Freedom. It was 50 years ago today when Martin Luther King Jr. delivered his