The Reverend Dr. Martin Luther King, Jr. was the most famous leader of the American Civil Rights movement. He is remembered for his commitment to non-violence and his rousing speeches. He was assassinated in 1968.
Dr. King picture from: http://nobelprize.org/nobel_prizes/peace/laureates/1964/king-bio.html
Background picture from: http://www.madisam.com/waving%20flag.jpg