But the thought leaders on talk radio and Fox do more than shape opinion. Backed by their own wing of the book-publishing industry and supported by think tanks that increasingly function as public-relations agencies, conservatives have built a whole alternative knowledge system, with its own facts, its own history, its own laws of economics.
Republicans know well that a change of rhetorical pace is necessary. But efforts by their leaders to damp down the bellicosity of newly elected Tea Party types is running into the fact that the Tea Partiers have only the high volume setting on their amplifiers, just like Palin. They're like a couple having a fight at a funeral; politely sotto voce, then suddenly bursting out fortissimo with their plaints and accusations.