Martin Luther King Jr. is best remembered for his role in what movement?

Martin Luther King Jr. is best remembered for his significant leadership role in the civil rights movement, which aimed to end racial segregation and discrimination against African Americans in the United States. His advocacy for nonviolent protests and his powerful oratory brought national attention to the struggles faced by African Americans. King is perhaps best known for his role in organizing key events such as the Montgomery Bus Boycott and the March on Washington, where he delivered his famous "I Have a Dream" speech.

His efforts were central to achieving landmark legislation, including the Civil Rights Act of 1964 and the Voting Rights Act of 1965, which were crucial in advancing civil rights in America. This movement sought equality and justice for all, making King's contributions essential to the progress of civil rights in the country.