VIDEO : BET Awards Highlights: Beyonce, Prince Tribute, & Jesse Williams

Sunday's BET Awards started with a bang. Beyonce opened the show with a clip from Doctor Martin Luthor King's 'I have a Dream Speach,' then launched into a performance of her song 'freedom,' her anthem to Black Pride, with support from Kendrick Lamar. Also turning heads was actor Jesse Williams from Grey's Anatomy, who used his acceptance speach to give a rousing call for an end to police racism and violence. He received a standing ovation.