Martin Luther King Jr. was a Baptist minister and leader of the American civil rights movement in the 1950s and 1960s. He believed that black and white Americans should have equal rights and be able to live together harmoniously. King led many non-violent protests against racial segregation, including the Montgomery bus boycott. His efforts helped end segregation laws and advance racial equality, though he faced opposition from those who supported the racial status quo. King was assassinated in 1968, though his message of non-violent protest continued to inspire civil rights advocates.