If they want to fight help them to do it right and cordon them off from the civilized people, give them weapons and ammo, let them go at it for a few days, come back and if anyone is left standing throw in some more ammo. They will eventually kill each other off and the world will be a better place.
“If they want to fight help them to do it right and cordon them off from the civilized people,...”
....some urban areas are self-evolving into that now ...beginning to look like a street scene straight out of “Escape From New York”....