That's your opinion. I don't believe that black people actually have such a herdlike mentality that they all vote the same way all the time or think the same way. I also do not believe what another person was saying, which is that black people will summarily reject him because he's gay.
Sounds like bullshit to me, but I'll admit your opinion on the matter is worth more than mine, as I'm just a white Mexican from near the border. I have family on both sides and I know that both sides of my family care more about issues while realizing nobody is perfect.