The attacks of Sept, 11, according to many college professors, have claimed another victim: free speech on campus. They contend that a chilling climate has arisen, in which they hesitate to voice ideas critical of America for fear of reprimand by university officials. At the University of Texas, for instance, when the administration criticized journalism professor Robert Jensen for accusing America of terrorism, his colleague described the faculty's reaction: "There was a very clear message that if you stick your neck out, [the administration] will disown you." Blaming a nationwide climate, the general secretary of the American Association of University...