Why do white people like to play hockey? It's the only other way to beat up something black if they're not a cop
Why would you say such things about people of color?
Because that's how I feel about them, who cares?
Police brutality is a widespread problem, and it is not a laughing matter, regardless of who it happens to.  The way this joke was worded also suggests that all white people are racist and want to be violent, but this just isn't the case.  Only a tiny minority of any racial group ever resort to violence, for any reason.