There was another case in my town where a guy who had a violent past, was confronted in his own home by some new guy who just moved in and wanted to impress his girlfriend. Went into this guys house and tried to attack him, it ended up out on the street they were both fighting for about 10 minutes. The known violence guy didn't give a fuck and was smashing concrete slabs and all-sorts over this "hero's" head. Needless to say the "hero" got well and truly fucked up and rightly so. But that didn't stop the papers calling him a violent thug and him getting 2 years in prison for standing up for himself.
The guy with the violent past fucked up by letting the fight go to the street. He should have killed that "hero" guy that came into his house to attack him.
You come into my house to attack me or my family, I don't care if you are an MMA fighter, a wanna be thug, or have a violent past...you sure as shit won't have any future as a dead man.