Personally, I think racism is more socially acceptable than most of us would like to admit. I've met people who left research in biotech because the ubermensch mentality was so pervasive there.

There is little evidence that social behaviours are transmitted genetically -- but you need only examine the history of Buddhist monasticism to realize that social behaviours can be transmitted, with extreme uniformity, in the absence of consanguinity. Why do people fall back on genetic determinism? It has a lot to do, I think, with logical positivism -- something that is very attractive to academics of every persuasion, except those close enough to its roots (physicists) to understand its limitations.

Edit: Oh, they've managed to make it into a completely different URL. I guess that's slightly more usable than the previous system, if I open that URL before I start reading, but it would really be nice if there were links from the content. We'll see what GreaseMonkey has to say about it.