What did Martin Luther King, Jr. advocate for?

Martin Luther King, Jr. is primarily known for his advocacy for civil rights, particularly during the American civil rights movement in the 1950s and 1960s. His efforts focused on ending racial segregation and discrimination against African Americans. King utilized nonviolent protest and civil disobedience as his strategies to challenge Jim Crow laws and promote equality. His famous "I Have a Dream" speech highlighted his vision of a society where individuals would be judged by their character rather than the color of their skin. This strong emphasis on civil rights continues to inspire movements for justice and equality today, making it clear why this option is the correct one. While he did speak on several issues, including economic injustice, the core of his activism was centered on securing civil rights for all individuals, particularly for African Americans.