Not OP but imo racism is a very american thing.
Not that prejudice (or if you're more lefty "systemic oppression") doesn't exist in other places, but how that's mixed in with the concept of race is very unique to America, where there's a clear divide amongst people of different skin tones and a gradually mixing of people of similar skin tones.
I don't think most Europeans consider themselves "white" like in American. They're French, German, Romani or whatever. Same with Africans and Asians. And in countries outside of the US any group conflict is usually among people of the same skin tone, which can be just as vicious but it's not racial
. And it's usually more geographically separated.
With the US, people identify themselves with their race rather than their ethnicity, which has more to do with how society labels you based on appearance rather than a cultural background. And most of the conflict is within society instead of between societies. People might be segregated to some extent, but it's by town and there's still a lot of overlap. It's not like black people live in one part of the US and white people live in the rest. And after a while, most people who "looked white" became "white" in the US.
Basically because of it's unique makeup I don't think "racism" in the US plays out the way "ethnic conflicts" play out in other parts of the world. All of this might apply to the "new world" in general though, but I don't understand shit about anything directly south of the US.