Here's one of cracked.com's fascinating lists: 5 psychological experiments that prove humanity is doomed
I'd heard of most of these before, but they do look pretty damning all in a block. But maybe the fact that we have looked at these twists in our collective psyche, and so can be aware and on guard for them, is a positive thing.
I guess the scary question for all of us is whether we could break out of this wired-in pattern, and do what's right when it really matters.