Someday, I hope, I'll sit a couple of grandkids on my lap and tell them about the days when Americans abstained from political violence and settled all our differences peaceably through the democratic process. Or maybe I'll pick a different fairy tale. Wednesday's attack on Republican members of Congress by a gun-wielding Bernie Sanders supporter was an occasion to wonder what we have come to when political differences are seen as grounds for killing. What we have come to, in fact, is the place we have always been. Our history is spattered with the blood of people targeted for political...
