Four out of 10 state prison chaplains say religious extremism is somewhat or very common in the correctional facilities where they work, according to a survey released today by the Pew Forum on Religion and Public Life.

Three-quarters of the chaplains who responded to the survey said converting from one religion to another was somewhat or very common among inmates. Muslims, Protestants and pagan or earth-based religions were the groups most commonly cited as growing.     

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