By GLENN HARLAN REYNOLDS

“…With only the barest outline of events available, pundits and reporters seemed to agree that the massacre had to be the fault of the tea party movement in general, and of Sarah Palin in particular. Why? Because they had created, in New York Times columnist Paul Krugman’s words, a “climate of hate.”

The critics were a bit short on particulars as to what that meant. Mrs. Palin has used some martial metaphors—”lock and load”—and talked about “targeting” opponents. But as media writer Howard Kurtz noted in The Daily Beast, such metaphors are common in politics. Palin critic Markos Moulitsas, on his Daily Kos blog, had even included Rep. Gabrielle Giffords’s district on a list of congressional districts “bullseyed” for primary challenges.

When Democrats use language like this—or even harsher language like Mr. Obama’s famous remark, in Philadelphia during the 2008 campaign, “If they bring a knife to the fight, we bring a gun”—it’s just evidence of high spirits, apparently. But if Republicans do it, it somehow creates a climate of hate.”

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