[Jared Lee Loughner] became intrigued by antigovernment conspiracy theories, including that the Sept. 11 attacks were perpetrated by the government and that the country’s central banking system was enslaving its citizens. His anger would well up at the sight of President George W. Bush, or in discussing what he considered to be the nefarious designs of government.
Of course, it ought to go without saying that no violent rhetoric on the Left led to this. Jared Lee Loughner had, and has serious mental issues. His ravings may have been at least partly political in nature, but no politician on the Right or on the Left bears any responsibility for the fact that a sick man decided to act out homicidal fantasies from beyond the realm of sanity.
Unfortunately, those who were all too willing to pin the responsibility for the Tucson shootings on the usual suspects on the center-right decided in large part to ignore Loughner’s severe mental illness. Too inconvenient for the narrative they sought to propagate.