Re: African-American section
There has been no poll for over ten years. When there was one, more wanted to be called African-American as opposed to black than wanted to be called black as opposed to African-American, and the majority didn't care. But that was ten years ago, so no telling what's changed.
What's incontrovertibly true is that African-American is a more commonly used term in 2018 than is black. Not that it's any of your business.