I unsuccessfully attempted to explain, for a good 45 minutes, to someone that a black person from Africa isn't African-American.
Me: "What do you call a person from China?"
Her: "Chinese"
Me: "Okay, what do you call a person from France?"
Her: "French"
Me: "Okay, then what's a person from Africa who lives in Africa?"
Her: "African-American"
Me: "But why? He's not American; he's lived in Africa his whole life"
Her: "No, 'African-American' is the term you use to describe individuals from Africa. You're being incredibly insensitive"
This went on for about 45 minutes, until I let her win and changed the wording on the presentation behind her back. She was furious when I presented that slide, too.