Right, because I believe slave owners used that term very negatively to refer to Blacks so it became a no-no.
But if I’m speaking Yiddish, there’s no other word to use to describe the color black whether I’m referring to a person or something totally innocuous. (The Hebrew options are worse, at least when speaking Yiddish, except that they might be less obvious to outsiders.) I sometimes fear saying “I bought a black coat” in Yiddish on the subway as Blacks may become offended since the word has been made taboo.
Common sense is always in order and should trump political correctness.