Just to confirm, have you already tried reporting the user for harassment or cyberbullying? Here's how: https://yt.be/help/So5x . We act quickly once it's brought to our attention.
I don't see how a black guy can be racist when calling another black person those things...
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.