When 'studying while Muslim' is probable cause.

This article talks about the new challenges that American Muslims have to face when studying in universities because of the religion they practice. Documents have been obtained that reveal that the New York Police Department has been engaged in a weekly surveillance of American Muslim college groups at 16 schools across the Northeast, including New York University, Yale, Rutgers and the University of Pennsylvania. The NYPD has sent undercover officers to spy on their conversations because the police department thinks thay might have information about terrorist plans. This is completly wrong and these actions violate the priciples that the US believes in, such as freedom of religion.
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Jose F. Solis-Camara