Martin Luther King Jr. Day is a United States Federal holiday marking the birth date of Rev. Dr. Martin Luther King, Jr. It is observed on the third Monday of January each year, which is around the time of King's birthday, January 15. King was the chief spokesman for nonviolent activism in the civil rights movement, which successfully protested racial discrimination in federal and state law. He was assassinated in 1968.
The campaign for a federal holiday in King's honor began soon after his assassination. Ronald Reagan signed the holiday into law in 1983, and it was first observed in 1986. At first, some states resisted observing the holiday as such, giving it alternative names or combining it with other holidays. It was officially observed in all 50 states for the first time in 2000.