On Sept. 11, Muslims across the Middle East re- acted to a YouTube trailer for the anti-Islamic movie “In- nocence of Muslims,” pro- duced by Nakoula Basseley Nakoula, by burning the U.S. flag, shouting anti-American chants and storming U.S. em- bassies in Sudan, Germany and the United Kingdom. Rather than resorting to violence in response to the video, however,...