Martin Luther King Jr. Day quotes: MLK inspiration from slain civil rights leader U.S. will remember and honor civil rights leader Rev King, the most visible advocate for voting and civil rights, was killed by an assassin on April 4, 1968. MLK Day is a federal holiday, though it was not made official until 18 years after his assassination. News story posted on 2022-01-16T23:25:00.0000000Z
