I don’t remember how I found this (it was on someone’s blog, but I don’t remember who’s), but this is an interesting article about taboos entitled What You Can’t Say. It seems to me to be written objectively enough that I couldn’t tell what the author’s political ideology is. I suspected about half-way through reading it that he is left-leaning, but upon finishing the essay and reading some of the follow-up that he links to at the bottom, I suspect that he may be somewhat right-leaning. Either way, he did a good job. Although it’s a little long, I recommend that you read it.