Not every black person is of African ancestry nor is every one an American. I have met an Australian who was very black. I met him in Dallas.

But if we are to refer to every person by some hyphenate of ancestry/citizenship, I wish to be known henceforth as Anglo-Germano-Tejano-American.

As for the word "colored", I certainly see where some people would be offended by it. I remember "colored only" signs. I just fail to see "person of color" as any better. Had the signs back then said "Persons of color only", what would now be the preferred nomenclature? The only thing POC does is include everyone who isn't white. But we already have a word for that: nonwhite.