These type messages are basically trial balloons to see how whites react. Since there isn’t usually much uproar, I’d expect to see this sort of thing happening a lot more.
It will eventually lead to congressmen, senators, and even the president openly calling for violence against white people. If you dare complain about it, you’d be called a racist.
Anyone who is fluent in English should be outraged. “B” and “U” are LETTERS, NOT WORDS!!!!!!!