Racial prejudice is not the same thing as sexual attraction, so please stop telling us this is just like integrating blacks in the military.
A Military Times survey in 2005 found that nearly half of all women in the military claim to have been the victim of sexual harassment -- ludicrously more than women in civilian life. By contrast, two-thirds of minorities said they were treated better in the military than in society at large.
There's a reason why discriminating against gays is rational but discriminating against blacks is not.
Black is not a behaviour.
Black is not a mental state.