That preppers and the "tough on crime" set overlap is really curious to me, since in the first you have an acknowledgment that circumstances shape behavior utterly, and in the second you have people really, really eager to punish or deter on an individual level, rather than shape behavior by changing systems.
Lack of punishment is in itself an enviromental factor. I'm sure those people would love to hand out punishment themselves in non apocalyptic scenarios, but the law doesn't let them.