We have entered what columnist Kathleen Parker calls "a political era of uninhibited belligerence," that is finding expression in sermons, at town hall meetings, on radio talk shows, even on the floor of Congress -- especially when we differ. Why are people so angry and belligerent, and so willing to express their anger publicly? Why has our civil discourse become some uncivil? What does this public anger say about our private faith? What should we do about it? Incivility is much too mild a word for what has been going on in our country for the past few months. What...