That quote sounds like BS, but Hitler did have interesting things to say about black people especially African Americans. He basically said that he didn't hate us or think bad about us. He actually felt sorry for us, not so much because we were being mistreated, but because we must have been bitchmade (not his words of course) to let all that stuff happen to us and still stick with America.
On the flipside, Hitler admitted that he bit a lot of the shit he pushed from Jim Crow in the U.S. America love talking about how bad Hitler and the Nazis were, but will never acknowledge that by his own words America birthed him in some ways.