I didn't really agree with Moonbeam's post linking to a paper implying that the basis for conservatism is neurological. But given the way the OP here seems to have responded to unfamiliar ideas, or to the notion that they progress from a child-like view of the world, by going into some sort of crisis and having a bit of a breakdown, I'm thinking maybe there is something in it. Conservatives do sometimes seem to be 'stuck' at that early level of understanding, and have difficulty with expanding their view of the world. See also, Trump. But I am sure it's an acquired trait, not biological in origin. Even if all acquired traits will of course be embodied in some way in physical changes in the brain, that doesn't make them biological in origin. It's usually a question of privilege - power is ignorance, the more power you have the less you need to learn new ideas or take in new information.
I remember having the 'but that's racism against white people' reaction at about the age of, maybe, 10. I think it was reading about the, interesting, theology of the Nation of Islam that inspired it (white people being the result of experiments with dogs, I think it was). Since then, though, I've grown up a bit and realised it's not quite that simple.
As for Atreus21's example - you are merely pointing at local cases where power might work the other way round. That can certainly happen [I already mentioned the situation of the Ugandan Asians, though there racism did operate in both directions, because these things are complicated], though New Orleans is part of the US and is the city government there is not an autonomous power in its own right. That doesn't really challenge the point that 'racism' is not just about ideas in heads, it's also about the context. But it is irrelevant to the response of the OP to the case in the original thread.