I would hope nothing like this ever happened as I know people all across the globe (not literally EVERYWHERE maybe, but in several places) would see an excuse to act like a primitive caveman idiot and go around rioting and destroying and stealing shit. Probably murdering people too, since in a situation like this, normal morals/ethics fly right out the window for many.
Anyway, considering I've been stolen from by someone in the apartment complex across the fence from where I live (it has to be them, as they're the only people I live next to), I'd arm myself with a weapon (I would think ahead and prepare for a situation like this, so I'd already have a gun and plenty of ammo on me) to keep anyone who wanted to come over to my house in droves away.
Hopefully in a universe where this happened, I'd be wealthy and living in a mansion and have a whole shitload of high-tech security that prevented anyone from coming near my property without turret guns coming out of the grounds and blowing trepassers away and stuff.