They are all bad. Cause the good ones can't or don't do anything about the bad ones. And if they do they usually hurt themselves for some reason.
So since the good cop can't or won't do anything about the bad one it makes them bad.
Doesn't matter all cops are bad. Yes there might be a "good" cool but since they can't or won't do anything about the bad one they're bad. And the shitty thing is if someone tries to eat out a bad cop they are the ones who get take the shit.
So yes all cops are bad.
And we "need" none of that to live. We just choose to use it.