How long until someone shoots one of those suckers down? It'll be interesting if they try to turn that into a terrorist offense. IMHO it shouldn't be any worse than (for example) taking a bat to an unoccupied cop car... Yea it's anti-social, but punishment really needs to fit the crime and taking out a surveilance drone isn't really much different than knocking a red light camera off of a stoplight. Except a bit more expensive...
But you just know that if/when it happens, they'll try to make a huge deal out of it or try to tie it to national security.