What was Martin Luther King Jr. known for advocating?

Martin Luther King Jr. is best known for his advocacy of civil rights for all Americans, particularly during the Civil Rights Movement, which took place in the 1950s and 1960s. He championed the fight against racial segregation and discrimination through nonviolent protest and civil disobedience. His leadership and eloquent speeches, such as the famous "I Have a Dream" speech, highlighted his vision of a society where individuals would be judged by their character and not the color of their skin. King's work contributed significantly to the passage of crucial legislation, including the Civil Rights Act of 1964 and the Voting Rights Act of 1965, which aimed to ensure equal rights and opportunities for all citizens, regardless of race. His legacy as a leader in civil rights advocacy remains a pivotal aspect of American history.