So much depends on what SHTF scenario occurs in my humble opinion, don’t forget SHTF is not TEOTWAWKI. Selco talks of surviving in an urban enviroment, so does Ferfal although if you have read what Ferfal had to say things could at time be much worse in rural area’s with home invasions and such.
When things get tough in the city it’s not just the prepared and the afraid who will leave the cities, the gangs will also looking for easier pickings. We see it over here now, we have commuter criminals stealing farm equipment, deisel fuel, live stock and poaching game.
If at first you don't succeed, excessive force is usually the answer.