Martin Luther King, Jr., Day is a holiday celebrated in the United States. It honors the achievements of Martin Luther King, Jr. King led the civil rights movement in the United States. He encouraged the use of nonviolence as a way to end segregation. He played a large part in the passage of the Civil Rights Act of 1964, which outlawed several types of discrimination. King was awarded the Nobel Peace Prize in 1964.
King was assassinated on April 4, 1968. Almost immediately after his death, there were calls for a national holiday in his honor. Beginning in 1970, many states and cities made his birthday, January 15, a holiday. In 1983 the government passed a law making the third Monday in January a day dedicated to honoring the memory of Martin Luther King, Jr. The day is usually celebrated with marches and with speeches by civil rights and political leaders.