That's just insane! If what you're saying is true, we're talking full-on raving insanity here.
LA riots, mahem after almost all professional sports championships, mobs taking people out of cars on the South Side of Chicago and beating or killing them on a regular basis, etc., etc., etc.
Yes - all fine examples of mass insanity. Thereby showing that the real question is why our society turns out such insane monsters, not what skin pigmentation should be of the cops they hire.