Ten years ago, the Taliban in Afghanistan destroyed two gigantic figures of Buddha, carved into a hillside 18 centuries before. The world was aghast at this barbarian act taken in the name of religious purity. But was powerless to stop it.

We now have a group of U.S. politicians seeking political purity, who seem to have much in common with the Taliban. They are tea party members; and because of blind adherence to smaller government, they seem intent on risking destroying what American political leaders have constructed in more than two centuries of hard, often painful work. Like the Taliban, they see compromise as an unacceptable alternative.