Honest question here, do you actually think anyone votes thinking to themselves "this will hurt me and it's against my interests, but I'm going to do it anyway because fuck black people"? Even if they do it at a subconscious level, do you think anyone that realizes he's getting fucked by the system is going to vote
for the system because they really dislike black people? Do you think that is more reasonable than people voting for what they perceive as their best interest?
I don't feel like I need to explain laissez-fair capitalism to you, or that when you raise corporate tax too high you risk corporations fucking bailing on your ass, or that people aren't against "moving up the ladder" but rather that they are against economic interventionism. I think you're already aware of that but you choose to disregard it anyways because the only explanation for a different political inclination is racism.
Let me ask you something, do you think white people elected Donald Trump to fuck with black people? If white people are so dead set on screwing black people and they are powerful enough to elect the president of the United States to that purpose, why are we still seeing some
social progress on that end (granted the problem is far from solved, but it's arguably getting better or at the very least it isn't getting worse)? Isn't that counterintuitive?