You have to get into the mindset of some great futurist films. For example, Terminator, etc. You can see how society collapses and most people die apart from pockets of armed determined groups. WW2 is interesting history, Germany collapsed in 1945 as the Red Army closed in and consequently, scores of Nazis and german families CTB. In Berlin alone, approx 7000 people took their lives in 1945 as everything collapsed. Its worse now. People dont pull together, generally speaking. There's selfishness and arrogance and we can expect the breakdown of law and order in a severe crisis once more.