It is an unspoken topic for the most part.
Not that unspoken these days with people whining that the 'wrong blacks' are getting into Harvard *LOL* Too stupid. People come here and they really don't have time to immerse themselves in racial demagoguery. They want to succeed and make money. Black people from other countries get discriminated against just HOW it's dealt with and what sort of attitude.
A long time ago, black people had to fight for everything they wanted. It's no one else's fault but today's black Americans' own fault if other immigrant people come here and pick up where the old folks left off. Nothing stopping anyone from doing what they want in the USA. It's not the black farmer I read about who opposed Mugabe and is now taking a dirt nap.