That's how they send the tear gas canisters a hundred yards down the street. Yes, the cops have grenade launchers. While they use them to launch beanbag rounds considered "Less than lethal" and tear gas, that is still a grenade launcher.

Very rarely used. Have you watched the videos from Ferguson? Or any other crowd control issue? They go through tear gas like a party at a Frat house goes through beer.

Then there is the pepper spray paint ball guns. No worries, they only burn like hell for a while.

I'm a little surprised by your lack of knowledge about what is going to the Police. Did you know that the cops received 93,000 fully automatic rifles from the military. Not total, not in the history of the program. Last year, in 2013 the Military transferred 93,000 fully automatic rifles to the cops.

93,000 seems like a lot. I don't know, what do you think? I mean, we're talking about the population of a fair sized town here. That doesn't include officers who buy their own, or the departments that just buy them instead of asking the military for some.

But that's fine, no worries. At least they don't have guided missiles.... Yet. The cops will be declaring they need those against terrorists who arm Drones in the near future. Doubt me? Bookmark this and come back in a few years when the cops are asking for stinger or patriot missiles in case the terrorists decide to copy us and arm drones.