I honestly doubt there is much of it either. It was more common during USSR for sure. These days... who knows, doubt there is much political power in those far east regions
thats pointless discussion from ethnicity point of view. People were deported left and right to Siberia because they were opposing cummunism, Stalin or russification. He cared very little what ethnicity they were (exception might be jews)
Funny enough. I can't remember any good black actress but I like a lot of black actors - maybe they just can't play?
edit: ok I googled something random and I must say I am not impressed - except Hale Barry I don't know any of them (but Hale is good so)
https://www.discoverwalks.com/blog/world/30-most-famous-black-female-actresses/