Through the media’s lens, Irving, one of the most diverse cities in the United States, became known as a city with a problem, the problem of bigotry. GLENN BECK TURNS TO BETH VAN Duyne, the mayor of Irving, his face lit with his signature mixture of excitement and manic alarm. “Let me just propose a theory,” he says. Just a week earlier, Ahmed Mohamed, a local teen who became known as the “Clock Boy,” had been arrested for taking a homemade ticker to his middle school. Mohamed’s bad day quickly became a global media phenomenon, one of the most widely traveled stories to emerge from Texas in 2015, and Beck, whose personal TV network, The Blaze, is based in Dallas, was starting to connect the dots in the cluttered blackboard…