I can’t understand how there are still people who discriminate against black people.
I'm black, he's white. What's wrong with that?
Peanut butter was invented by a black person named George Washington Carver.
A black person is simply a black person, kind of like how a 白人 is a "white person," but a different color.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.