We should have an IQ test for police and some sort of way to screen out the adrenaline chasers. That would be racist, sexist, biased, take your choice though and not everyone would get to play.
So instead we have dead people... pretty much like every socialist policy we have ever tried.
Not long ago, there were threads here about police departments rejecting the more intelligent applicants.
If so, it paves the way for the less intelligent with poor decision making capability to run amok.