Your theory is nonsense. Whites in general created negativity around the black race to justify enslavement and white superiority, same as humans create negativity around dogs (i.e. they are just animals) so as to justify enslaving dogs. That's it.
Indeed, all men are born and raised with certain biases and predisposition which society reinforces (or not). Poor cacs have a predisposition to ignorance and bigotry, all the while getting reinforcement for these beliefs by a white centric and controlled society which tells and implies to them that indeed cacs are all better than blacks. As such the poor cacs come to believe in their own supremacy without any rich cac ever saying anything. In fact poor cacs, by dint of their ignorance and bigotry, are often disappointed with the rich leaders who don't appeal to said ignorance and bigotry. The poor cacs actually gravitate to the rich cacs who are racist bigots. And a loop begins: the rich cacs see that their candidacies aren't drawing attention, and that the poor cacs only support racists, and so the rich cacs begin advocating racism, and so on and so forth. There, I've just described the Republican party and the Southern strategy.