When Glenn Beck made his Fox debut, some shrewd conservatives responded with a wink. Maybe the show was paranoid and hysterical. Maybe Beck was none too scrupulous about facts and truth. But why be squeamish? The other side did as bad, or nearly. And see how usefully he mobilized the base! Those shrewd conservatives assumed Beck was working for them. Big mistake. Beck is working for himself – and he chooses his targets according to his own scheme of priorities. The newest target is Cass Sunstein, confirmed yesterday by the Senate as director of the Office of Information and Regulatory...