On saturday night we threw a surprise party for a friend of mine, at the end of the night, after everyone had gone, 3 kids started a fight after we had asked them to leave for well over an hour and a half. We beat the fuck out of them, they apologized for starting shit, and eventually left. Sunday: these kids think there "hood" or "gangsters" realize they look like they got the holy hell beaten out of them, tell everyone they were "jumped". Their "hood" friends start threatening us.... saying there going to beat us up, shoot us, they have "heat". We notice a sketchy black male walking up our stairs via the video camera we have installed, he proccedes to rip it off the wall and start kicking our door in. They know there are 6 big guys in the apartment and are the same kids that were threatening to shoot us. We barricade ourselves in a room, they rob an xbox 360 and 50 bucks from us, escape before the cops show up, cops put out arrest warrants given that we know who they are. What I am asking however, is given that these kids came into my house, if I had a gun what could I do to protect myself without facing a massive lawsuit. Could I have killed them? What would have happened if I shot and injured them? Friends with shotguns and a permit are offering to stay with us until this is resolved, if a friend staying with us brandished a weapon after someone broke into our house, what kinds of trouble would he get in?