For the benefit of Nobel prize winning economist and former Enron adviser Paul Krugman, Krauthammer runs down the timeline:
(The) available evidence dates Loughner’s fixation on Rep. Gabrielle Giffords to at least 2007, when he attended a town hall of hers and felt slighted by her response. In 2007, no one had heard of Sarah Palin. Glenn Beck was still toiling on Headline News. There was no Tea Party or health-care reform. The only climate of hate was the pervasive post-Iraq campaign of vilification of George W. Bush, nicely captured by a New Republic editor who had begun an article thus: “I hate President George W. Bush. There, I said it.”
And summarizes with a question:
The origins of Loughner’s delusions are clear: mental illness. What are the origins of Krugman’s?
Projection, I should think.