This is ABSOLUTELY correct but only half the equation. Assholes come from everywhere, but white male assholes from the colonial era engineered a system that pegs your ability to ACT on that horridness to your proximity to their racial and gender group. And the assholes in successive generations of said white men have made it their lives’ work to maintain those lines and stay powerful.

Everyone has the capacity to be horrible, it’s just that this specific group set up extensive infrastructure for it.