MLK in reality was just like the modern versions of shamsters. He is just a sacred cow and no one will criticize him. He surrounded himself with commies and perverts and was known to get himself into compromising positions ethically.
I think most damning is his final paper at Chicago Seminary clearly lays out a position on Jesus that precludes MLK from being a real Christian. More of the same quest for the historical Jesus where Jesus didn’t really do any miracles or rise again because he was really only a man and nothing more.
Jefferson was accused of the same thing for the same reason. American is a nation based on "self evident" truths that affirm God and religious based morality, i.e. the laws of nature and of nature's God. These are the basis of our Constitution. . .not "correct" theology.