I also recommend this book:

World War Z: An Oral History of the Zombie War, by Max Brooks

It's fiction (no, really!) but in my opinion the way it is written accurately predicts the behaviour of all kinds of groups of people around the world when faced with a large disaster. In this case it is zombies, but I think Max Brooks' observations would apply to real events. It's entertaining too.

My favourite chapter is the one where everyone escapes to the country in their RVs. It's like a giant, friendly picnic at first, but then winter approaches, and soon all the trees have been chopped down. Food becomes scarce...

(This is in no way meant to belittle the actual events of WWII, but for a work of fiction it painted some very realistic and believable scenarios).

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