[meric]

Not trying to disagree with you:

As far as I know racism stems from one race thinking they're more human than the other, which occurs, I think, due to the perception of differences in intelligence when the perceived inferior race is trying to communicate, in a sub-optimal way, to the perceived superior race, and being constantly made fun off in the process.

I imagine a typical racist comment in 18th century America: "There's no point telling the slave, he's not gonna understand anyway.".

[Nanzikambe]

It also stems from potential gain, you only have to look to former colonies to see this. It's much harder to subjugate a people if you view them as equals.