Sadly, a significant percentage of American blacks are racist and hate whites and Asians. Some hide it better than others. Many, usually in a cowardly way like sucker punching, physically express that hatred. Many also feel that attacks and murders are justified and that they should face no adverse consequences for their attacks.
There's also all these very weird high-income white women who think that - as long as it's not against themselves and their friends.
I have two grandfathered in black friends. They hate blacks too. But they have family, and the rotten culture they embrace infects the family too and they are outcasts.