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 "Many felt that it was difficult to live as a Muslim in a hostile environment that left them feeling stigmatized and/or marginalized."
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Canada is secular society with a few cultural Christian traditions.  Ms. Khan wants to cite this a the cause of radicalization with the cure being federal government intervention.  
This avoids dealing with uncomfortable issues peculiar to Islam.  The most unique being that Islam comes packaged with a full  political system module that creates inherent conflict with any non-Muslim receiving country.