Within hours after Jared Loughner's killing spree, New York Times columnist Paul Krugman went straight for the gutter, proclaiming, with no evidence whatsoever, that Loughner's act was in all likelihood "political," and going on to blame Republicans for the murders. I denounced Krugman's vile blog post here. We now know that Loughner's murders were not political. He was deranged and had no coherent political philosophy. To the extent that he had any political beliefs at all, his friends describe him as left wing. He thought the Bush administration was behind the September 11 attacks. He has been more or less...