I must confess that, as an outsider to (but occasional reader of) Less Wrong, I find certain statements and arguments on this site to be just as totalizing and dogmatic as the most dangerous religious fundamentalism.

That seems like a surprising claim! I'd like to explore it further.

The most dangerous religious fundamentalisms lead people to do things such as blowing up buildings, committing mass murders, jailing and torturing people for apostasy, and throwing acid in the faces of schoolchildren. This occurs both when dangerous religious fundamentalists occupy positions of formal political power (governments), and when they do not (terrorist groups, militias, abortion-clinic bombers).

(Note, I'm not asserting that religions or fundamentalisms in general promote those sorts of things. You specifically said "the most dangerous religious fundamentalism", and I'm taking that limitation in good faith.)

Somehow, nobody around here seems to be doing those sort of things. Indeed, that sort of behavior seems to be pretty rare in the Traditional Rationality community too — the skeptics movement; the New Atheists; etc.

Is that just because we are totalizing and dogmatic about making people happy instead of about hating and killing them? (I am reminded of a Barry Goldwater quote about extremism and moderation.)

Or do you think there is some other reason?