When a junior at the University of Oklahoma blew himself up outside a packed football stadium, the news coverage was minimal. Bloggers and local news agencies, however, took up the research into the young man’s background, and concluded – quite falsely, according to the FBI and his family– that the details pointed to Islamic terrorism. According to the Wall Street Journal, several facts led them to these speculations: Joel Hinrichs III had a Pakistani roommate, their apartment was one block away from the only mosque in Norman and he had a scraggly beard. The mosque near them was the same...