I'm a little bit suspicious of this story since the student's name isn't mentioned and it hasn't filtered into the mainstream news media.
From SouthCoastToday: " A senior at UMass Dartmouth was visited by federal agents two months ago, after he requested a copy of Mao Tse-Tung's tome on Communism called "The Little Red Book.""
http://www.southcoasttoday.com/daily/12-05/12-17-05/a09lo650.htm