Martin Luther King, Jr. (January 15, 1929 – April 4, 1968) was an American pastor, activist, humanitarian, and leader in the African-American Civil Rights Movement. He is best known for his role in the advancement of civil rights using nonviolent civil disobedience based on his Christian beliefs. King also helped to organize the 1963 March on Washington, where he delivered his famous "I Have a Dream" speech. There, he established his reputation as one of the greatest orators in American history. J. Edgar Hoover considered him a radical and made him an object of the Federal Bureau of Investigation's COINTELPRO for the rest of his life.

In the final years of his life, King expanded his focus to include poverty and the Vietnam War, alienating many of his liberal allies with a 1967 speech titled "Beyond Vietnam". King was posthumously awarded the Presidential Medal of Freedom and the Congressional Gold Medal. Martin Luther King, Jr. Day was established as a holiday in numerous cities and states beginning in 1971, and as a U.S. federal holiday in 1986. Hundreds of streets in the U.S. have been renamed in his honor. In addition, a county was rededicated in his honor. A memorial statue on the National Mall was opened to the public in 2011.

Learn more about him in this informative biography!