Yea - criminals typically have more repercussions to their actions where-as a cop has lots of protection behind them. Usually the worst-case scenario for a cop pulling the trigger is a boring early retirement with one heck of a pension.

I'd rather be mugged at gunpoint vs. held at gunpoint by a cop any day of the week due to game theory alone.

If that is your preference, I think you are living in the wrong country.