WATCH: Dr. Martin Luther King Jr. was assassinated 50 years ago tonight. Chet Huntley reported the news in an NBC News Special Report, seen here. King was in Memphis, Tenn., where sanitation workers, almost all of them black, had been on strike for weeks. The night before he was killed, King gave the last speech of his life, the famous “I’ve Been to the Mountaintop” speech, before an audience of striking workers and their supporters. He ended the speech by saying, "I don't know what will happen

Shortly after Dr Martin Luther King Jr led the march on Washington in 1963, FBI agents were ordered to start following him. The extent of the surveillance shocked film maker Sam Pollard so much he decided to start digging. bbc.in/2XKwnap | BBC News

Fifty years ago today, Robert F. Kennedy gave an iconic speech in Indianapolis, telling the crowd about Martin Luther King's assassination. The city was expected to riot, but instead, he calmed the crowd into silence. Watch Kennedy's full speech below. https://www.wthr.com/article/watch-robert-kennedy-gives-speech-in-indianapolis-after-mlks-assassination | WTHR-TV