The issue of censorship of conservative speakers at major universities by students on the political left is discussed. It is argued that many campus liberals are being duped by committed radicals into supporting radical causes, and that in many cases, campus liberals betray the tradition of intellectual tolerance. The following concerns are posed: whether teachers are instilling their students with a respect for free institutions; whether colleges permit all viewpoints to be voiced and protected; and whether student organizations selectively defend the free speech rights of those with whom they agree. Documented cases of efforts to silence speakers on campuses are described. The result has been a monopolizing of debate on the larger college campuses by proponents of the radical left. Three organizations that are active on campuses nationwide that reject the democratic ethic of freedom of speech are discussed: The International Committee Against Racism, the Spartacus Youth League, and the Committee in Solidarity with the People of El Salvador. It is suggested that there are college faculty and administrators who are sympathetic with the students. Adequate security and dealing firmly with protester leaders at campus speeches are recommended. The danger of succumbing to totalitarianism is noted. (SW)