Alfred Daniel Williams King was an American Baptist minister and civil rights activist. He was the younger brother of Martin Luther King Jr. and the younger son of Martin Luther King Sr.

Martin Luther King Jr. was an American Christian minister, activist, and political philosopher who was one of the most prominent leaders in the civil rights movement from 1955 until his assassination in 1968. A black church leader and a son of early civil rights activist and minister Martin Luther King Sr., King advanced civil rights for people of color in the United States through the use of nonviolent resistance and nonviolent civil disobedience against Jim Crow laws and other forms of legalized discrimination.