So how does a nice, Jewish boy become a radical Islamist? You think I'm making this up, right? Wrong. It actually happened. It's okay - he outgrew it and went to law school – but his book about it is a good read, and an important testimony to how radicalization works, and is working. To this very day, maybe even in your home town.
Here's a review.
Forewarned is forearmed. Enjoy.