I think that most of the things in Jay's post are cultural, not genetic.
If you subject white people or brown, or yellow, or whatever to a lot of shit, let them live in shit, with the helplessness of feeling like they will always live in shit, I bet its not all roses. I'm not quoting population statistics here, but I think that most "black" people here are descendants of slaves.
I wonder how the hindu caste system works out by comparison, for the lowest members.
Never heard of this Warrior Gene before.
There was selective breeding of slaves. I wonder how that figures in.