According to the progressive definition of racism ('structural oppression'), minorities cannot be racist. That makes it likely that norms against ['dictionary definition'] racism are less enforced among minorities, and we might see more racist attitudes among them? Is there data?
I am quite sure that among most groups of minorities, there are strong norms against racism, too. I just noticed that we should see a difference in enforcement within groups that operate under the intersectional definition. (Again, I am not saying that this is good or bad here.)