JAMES TARANTO: Democrats for Buchanan: “Core institutions” of the president’s party turn against Israel. “Whatever one may think about the Middle East, the emergence of CAP and MediaMutters as ‘core institutions’ of the Democratic Party is unsettling. It suggests that the donks are increasingly organizing themselves around tactics of bullying and slander. That’s good news for the GOP inasmuch as it indicates the Dems’ underlying weaknesses. But it’s bad news for the country that one of the two major parties has so lost its moral bearings.”