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." The student, who was completing a research paper on Communism for Professor Pontbriand's class on fascism and totalitarianism, filled out a form for the request, leaving his name, address, phone number and Social Security number. He was later visited at his parents' home in New Bedford by two agents of the Department of Homeland Security. The professors said the student was told by the agents that the book is on a "watch list," and that his background, which included significant time abroad, triggered them to investigate the student further. They brought the book with them, but did not leave it with the student, the professors said.