I thought they hated being called Afro-American?

Jeezus, I am so fucking confused as to what the yearly PC term people in American society should call them. First, it was Nigra then it was Colored then it was Black then it was Negro then it was Afro-American then it was African American... bloody hell what term are we supposed to use now besides that won't piss them off hence guy/girl/man/woman of that particular race? Nigracoloredblacknegroafroamericafricaamerican?! Fuck!