McFadden, the former NCIS counterterrorist, has a lot of respect for his FBI colleagues, who he believes are ill-served by these Islam briefings. “These are earnest special agents and police officers who want to know how do their job better,” McFadden says.

Too often, McFadden says, counterterrorism training becomes simultaneously over-broad and ignorant. “Instead of looking for indicators of nefarious behavior, you have a sweeping generalization of things like, for instance, the Hawala system,” McFadden explains. “It’s a system that most of the developing world and expatriates from it use to move money around, including terrorists. But you can’t say the whole hawala system is about terrorism, just like you can’t say that Islam as a whole has anything to do with bad behavior.”

McFadden, a Catholic, believes that obsessing over obscure Koranic verses is as useful a guide to terrorist behavior as “diving into the rite of exorcism” is to understanding Catholicism.

FBI Teaches Agents: ‘Mainstream’ Muslims Are ‘Violent, Radical’ | Danger Room | Wired.com