Blacks do have a higher rate of crime. It is most likely a result of the breakdown of institute of marriage among Blacks. That is what you get for adhering to social liberal values. Denial is not the solution.

This is your summation affirmative action or, as you call it, “mixing”? It’s failed because it’s brought “black crime and violence” to previously white neighborhoods? What crimes are “black” crimes? What violence is “black” violence?

It worked for the USSR but as soon as the USSR broke down things went south. You see much the same situation in Iraq.