Every image of a New York City or Oakland policeman abusing his position, every story about how a veteran or senior citizen was injured by one of these policeman, every image of a university police officer casually pepper spraying a few college students doing nothing more than sitting quietly at a demonstration damages the ability of the U.S. to influence people and governments around the world and provides fodder for those authoritarian leaders who would like to ignore American entreaties before killing or beating up demonstrators in their own countries.