We met many blond blue-eyed Chechens in Moldova for example. And Chechens are white, they look white, they identify as white themselves too of course (and I think it is safe to assume that there asses match the rest of them in this respect) but "black" and "black-arsed" are the derogatory terms they are called there. And a couple of Russian volunteers even told us that to them calling someone African "black" in Russian would feel more offensive than using the n-word. The n-word ("negr" in Russian) did not seem that bad to them, (obviously there are very few African Russians) and definitely better than using "black", which seemed more loaded to them. Those volunteers were in their fifties and from some small town in Siberia so I do not know how it is for the current generation say in Moscow.
I thought that this information could be of significant value to one struggling American, probably the only American in the whole world who could benefit a lot from actually moving from the US to Chechnya and becoming Chechen and then moving to and settling in Russia: