It doesn't take a natural disaster or loss of the power grid or even a sale on the newest Nikes. Revolution against the police state can do it too.
"Nearly half of Americans would expect serious, sustained life-threatening civil unrest within two weeks of a major catastrophe, such as an EMP attack that would destroy electronics, according to a new poll."...
This post is inspired by the conversation with rblong etl al. in the thought experiment thread re: the propensity for violence to achieve selfish purposes.
You might also enjoy one of my favorite "songs"...