The historic figure known for his role in the American Civil Rights Movement is Martin Luther King Jr. An influential leader and civil rights activist, King advocated for nonviolent protest and civil disobedience as means to achieve racial equality and social justice. He is best known for his role in organizing significant events, such as the Montgomery Bus Boycott and the March on Washington, where he delivered his iconic "I Have a Dream" speech. His efforts were pivotal in combating racial segregation and discrimination in the U.S. King's legacy continues to inspire movements for justice and equality worldwide.