US President <a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Barack+Obama&family=editorial&specificpeople=203260 ng-click='$event.stopPropagation()'>Barack Obama</a> delivers remarks during the 'Let Freedom Ring' commemoration event, at the Lincoln Memorial August 28, 2013 in Washington, DC. The event was to commemorate the 50th anniversary of Dr. Martin Luther King Jr.'s 'I Have a Dream' speech and the March on Washington for Jobs and Freedom.