Technically speaking the term "African American" should be used to refer to recent migrants from Africa to America, it doesn't make sense to call the black Americans (who descend from the slaves from in the 1800) with a term like "African American", they don't have a recent cultural connection with Africa anymore, they are Americans. We might as well call Americans who came from Europe "European Americans". The true AAs are the recent migrants from Africa who reside in America.