Stop with the first half of your statement, which ultimately controls society's outlook on things....black women/white men is more preferable, because white men, who power the norms and culture, are in direct benefit and control of such a union. White men are not of direct benefit of white women/black men relationships, which is why it inspires more derision and neurosis when presented on a public stage. I dont know what exactly black women are controlling, when it comes to collective assumptions and leanings of our American institutional group think. Thats just made up.