I am assuming a premise that Malcolm and MLK are mutually exclusive. Certainly at the time, that's the way they were perceived.
Speaking as a white man, in conversations with other white men, everyone respects Martin Luther King. He spoke to the better angels of our nature.
However, we understand Malcolm X.
In my experience, anyone who has read his The Autobiography of Malcolm X gets him,...regardless of political persuasion.
What say you?
Why prefer one over the other?