Islamic extremists in the United States have traditionally set up shop in big cities with large Muslim populations: places like New York City, Dearborn, Michigan and even Washington, DC. But one secretive group is doing just the opposite.

They call themselves Muslims of America. They've established compounds throughout the rural U.S. They are said to have close ties to a violent Pakistani group named Jamaat Al-Fuqra. Both groups are led by the same extremist cleric: Sheikh Mubarak Gilani.

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