Martin Luther King Jr., a prominent civil rights leader, dedicated his life to fighting for racial equality and justice. Through his unwavering belief in nonviolent resistance, he led the Montgomery Bus Boycott, a successful campaign that desegregated public transportation. King's "I Have a Dream" speech during the March on Washington for Jobs and Freedom became a defining moment in the civil rights movement. His advocacy for the Civil Rights Act of 1964 and the Voting Rights Act of 1965 paved the way for significant legal protections against discrimination. King's legacy as a champion of social change continues to inspire generations to work towards a more just and equitable society.