How the Islamic State evolved in an American prison -Washington Post

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“It’s a scenario that has long confounded law enforcement: How do you crack down on extremism without creating more of it? From the radicalization of white supremacists in U.S. prisons to Britain’s disastrous bid in the 1970s to incarcerate Irish Republican Army members, the problem is nothing new: Prisons are pools of explosive extremism awaiting a spark.”

http://www.washingtonpost.com/news/morning-mix/wp/2014/11/04/how-an-american-prison-helped-ignite-the-islamic-state/