Not on the cops side, but let me ask you this, my dim-witted friend.....
What will you accomplish by killing a cop out of revenge? You think you're gonna get them all, then they'll go away for good?
No, they will hire 1, possibly 2 more to take his place and the next one might be even more of a douche-bag than the one you just disposed of.
Who knows, you kill enough cops, they might decide to just go with some kind of Mech-warrior type thing instead. You know, like the prototype they had in RoboCop, cept these new ones wont just wobble back and forth and fizzle out after going haywire. They will work like they're supposed to.
And we'll have your dumb ass, and people like you, to thank for it.
Heres an idea Tom. Find yourself a good aluminum baseball bat, then go out in the woods and kill every mosquito you can find with it and see how long it takes. Get back to me with the results.