Of course it is.
If a cop shoots a kid sitting in his bed during a no-knock raid gone wrong - that's bad.
If a cop shoots a gang banger who is assaulting a old woman - that's good.
See - a cop shooting a civilian can be a good thing or a bad thing, relative to the people and the situation.
I don't really even get what you're trying to say.
That evrything is relative.