IN THE MAIL — well, in the sense that they’ve put it in the mail, anyway — is Michael Leahy’s new book, Rules for Conservative Radicals. He urges combining the tactics of Saul Alinsky with the morals of Martin Luther King. Via email, he says he favors an “Army of Pauls” as a less-violent-sounding take on an Army of Davids. I’ll be interested to read that, though I’m temperamentally inclined to view giant-slaying favorably . . .