Afro-American or African-American. It operates under the wonderful assumption that all black people living in North America are from, or had family that emigrated from Africa. It's great because it's "politically correct", but it excludes people from at least a full other continent. Okay, so it's not a real euphemism. So sue me.
This is to you, politically correct idiots:
BTW, "comparing apples and oranges" is a cliche simile, not a euphemism.