Paul Krugman was delighted to charge the entire right with complicity in the Loughner shooting, because we (like everyone else) used the occasional violent metaphor. But Krugman now seems to have gotten over his excruciating sensitivity to violent metaphors, as he is now writing about dealing with bad ideas with “another shot to the head”.
And save your breath if you were thinking of protesting that Krugman isn’t talking about shooting people. Not a single one of the persons (e.g., Michelle Bachmann) that Krugman smeared were talking about shooting people either. That excuse doesn’t cut it in Krugman’s new era of civility.