Where can I find statistics on black American's attitudes towards black nationalism/militia?

Anyone with eyes and a brain can see that black American's tend to sympathize with extremist ideologies then other races in America. It's largely due to racial anger being passed down by generation in black families. I'll be ignoring all the white people in the answers claiming this known fact that black people themselves admit to be true is "racist" or any attempts to deflect with fallacies like "what about the radicalization of young white men" as if the two can possibly be comparable. I simply want a link to statistics/studies if any exist.