The 'war on drugs' is the obvious example that sprang to mind and has already been mentioned. It has cropped up a number of times without objection.

I suspect that one of the reasons theism has 'special status' is that it requires little domain specific knowledge to recognize its irrationality. Basic scientific and historical knowledge and experience of the world are enough to throw up serious doubts for anyone who starts down the path of rationality. Other examples that spring to mind require a little more specialist knowledge.

An example: there is some overlap between the 'economist blogger' community and the OB readership. Economics bloggers have on occasion discussed the fact that there are certain uncontroversial truths accepted within economics that are not uncontroversial amongst non-economists. Examples are the benefits of free trade over protectionism, the ineffectiveness of price controls, the general efficiency benefits of markets and the net benefits of relatively open immigration policies. I had to learn a bit about economics and be presented with the results of studies to be fully persuaded by some of these arguments - unlike atheism it was not obvious to me from my direct experience that they were true. Perhaps someone more rational than myself could have deduced these truths from first principles and direct observation but as a general rule I would not assume that someone who had not a passing familiarity with economics would have found these truths to be self evident.

Another, and perhaps more troubling, reason is that I suspect a certain amount of self-censorship is at work in order not to risk fragmenting the community with examples that while less controversial in the general population might be more controversial within the self-selecting subset of Less Wrong readers. The Larry Summers affair might be an example of the kind of belief that might be self-censored in a burgeoning rationalist community, despite the noticeable lack of representation of a certain demographic within that community.