An extreme or even accelerated form of "Survival of the Fittest" would be a pretty accurate description.

I see you examples in a slightly different light. The masses weren't exactly "Brainwashed". I truly believe there was a certain rationality to it all which is difficult to explain in a very concise manner. So, I don't quite agree with the term "Scapegoating" either. As with any genocide there has to be a very large group of people who come to a very definite conclusion about another group of people. This kind of thing doesn't just happen without some sort of reason for it. It's not a spontaneous kind of thing. :S

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The Science of Brute Force......