This is not a call for civility. Manners are not enough. The smug style did not arise by accident, and it cannot be abolished with a little self-reproach. So long as liberals cannot find common cause with the larger section of the American working class, they will search for reasons to justify that failure. They will resent them. They will find, over and over, how easy it is to justify abandoning them further. They will choose the smug style.