What to do about gatecrashers and trespassers

Worried about the debate degenerating. How is this for a story.

I was having a few drinks and a chat at a mates place (farrars), then all of a sudden someone barges in all obnoxious like and hurls abuse around. I took exception and said how about we take it outside. Someone else (Sonic) stepped in and added provocation so I said you next….as I walked outside the protagonists ran off down the street flipping the bird and claiming victory.

So, I go home, back to my place and start to talk to my mates about the carry on and who should barge in unannounced, trespassing if you will but one of the protagonists. I let him rant and rave and again he runs of flipping the bird and claiming victory, worse he gets his childish little mates to run a pamphlet around the neighbourhood and invites a whole lot of them over to my place to mess it up a little.

All of a sudden I am the bad guy coz I take exception to the rantings and raving some some rude and impolite people at my mates place and at my own place…..puleeease.