It’s historical. The politically correct term for blacks has varied over the years. In earlier years, they prefered “colored” to “black,” and then that changed.
The preferred term now is “African American,” but it’s a bit unwieldy, so “black” is permitted.
Or you are allowed to say “persons of color.”
Thank you for the explanation...I’ve always wondered about that.
I remember “Afro-American” in the 1970’s. As George Carlin said, “that lasted about 3 weeks”. LOL
I was wondering what ever happened to “Afro-American”?