The historical figure known for his role in the American Civil Rights Movement is Martin Luther King Jr. A prominent leader and advocate for nonviolent resistance, King was instrumental in pushing for civil rights and social justice for African Americans during the 1950s and 1960s. His eloquence and powerful speeches, including the iconic "I Have a Dream," galvanized public support and brought awareness to racial inequality. King's efforts led to significant legislative changes, including the Civil Rights Act of 1964 and the Voting Rights Act of 1965. His legacy continues to inspire movements for equality and justice throughout the world today.