This is a federal holiday in the USA held on the third Monday of January every year. The day celebrates the birthday of Martin Luther King Jnr, who was the chief spokesperson for nonviolent activism in the Civil Rights Movement, which successfully protested racial discrimination in federal and state law. He was assassinated in 1968, and a campaign for this holiday began soon after. President Ronald Reagan signed the holiday into law in 1983, and it was first observed in 1986. It was first officially observed in all 50 states for the first time in 2000.