What was Martin Luther King Jr known for?

Martin Luther King Jr was known for his role as a civil rights leader and activist, particularly in the African American community. He advocated for nonviolent protest and direct action to seek equality, justice, and civil rights for all. King's influential speeches and writings, including the "I Have a Dream" speech and "Letter from Birmingham Jail," helped to inspire a movement and bring about significant social change in the United States. He was also a key figure in the Montgomery Bus Boycott, the March on Washington, and the Selma-to-Montgomery March. King was tragically assassinated in 1968, but his legacy has continued to inspire social justice movements around the world.