Jacob Weisberg itemizes what he calls "The Four Unspeakable Truths" about the Iraq War. I think there's an important dialogue here that this country isn't having because of these taboos.
One of my best Conservative friends often rails at what he sees as a pernicious "political correctness" on the part of the Left that prevents, for example, a lot of valid points from being made about minorities because the observations are mislabelled as racism. I agree with a lot of his examples. Where we part company is that I see as much of that on the right. One cannot say or even suggest, for instance, that the death of any U.S. soldier was unnecessary or due to leadership incompetence or that it's anything but the noblest of sacrifices. I think everyone is now of the mind that something has been seriously wrong with the whole invasion of Iraq, or at least the aftermath of that invasion. It might be nice if we could discuss what exactly it was.