Let's look at those police stats from a different point of view.
Suppose we accept that the NY police officers represent a "reasonable test group" of human beings who have gone through training with a handgun. Maybe what the "22 incidences of unintentional discharges" are telling us ... is that it's much harder (than we think) to effectively control your mind and your body - when someone else is literally trying to kill you with a gun.
Would we really do any better than the NYPD under similar circumstances??
Pete2