In last year’s election campaign we were reminded that images can overpower words. The U.S. military prohibited the taking of pictures of flag-draped coffins arriving from Iraq even as it freely shared statistics on the number of American dead. It knows that the images are more powerful than the numbers. Digital photographs from Abu Ghraib prison provoked an outcry that written complaints were unable to elicit. Campaign commercials offered images intended to attract or repel, all in the service of selling a candidate or discrediting an opponent—irrespective of any policy position actually taken or advocated.