Lower numbers don't mean less power and reverse-racism is not real. It's just not. Unless you're writing from some alternate reality where Northern Europe has been colonized for a couple hundred years?
Hostility or prejudice towards another racial group based on the idea that your race is superior. Usually sustained by taking various stereotypes about the targeted group and portraying them as intrinsic qualities.
If there was real hostility towards white people/Europeans, sure, you would have a point. But saying "hey, there's some problematic stuff going on with the way we're talking about Africa" is not an attacking white people in particular, it's just criticizing some aspects of the system we have today. I don't think anyone would claim our world is perfect and there's nothing to criticize about it.
Is there even a racial slur for white people? I can't think of one. But there's plenty of slurs for anyone with a different skin color, and they get used a lot more often. Here's the final example: “prejudice” against white people is someone telling them they're doing some stuff wrong; prejudice against black people or immigrants is expressed by throwing them in jail, denying them jobs, making it impossible for them to get a decent education or live in an alright neighborhood. It's a pretty big difference.