Thanks to Andrew Sullivan for this one.

The leftist principle of moral equivalence reaches an apex in this article.

The idea that a raving serial killer and a policeman are "equivalent" morally because both carry guns and under certain circumstances, both shoot people, is a common red herring for those who are trying to eliminate all consideration of morality and intent from the discussion. It's often seen in complaints that we shouldn't have problems with Saddam Hussein or North Korea having nuclear weapons, since America and Israel have them, or the idea that Israel and Palestinian extremists are equivalent since civilians have died as a result of attacks by both. The fact that civilian deaths are collateral damage in one case, and deliberate policy in the other, is ignored.

I could have a field day with this article, but I think I'll just leave it up as a kind of inkblot test.