Ppl can make race so sticky. No1 talks about let alone studies not only race differences but the difference between Africans and a African Americans. An any other race who’s ancestors were subjugated to the slave trades that had owners who breed slaves for better , strength , immunity, etc. etc.  Or if there’s is some sort of race based intelligence what happens when races interbreed. There’s a lot to be learned an it like it has the same taboo that sexuality once had.