Here is a story:
After a group of UC Davis women faculty began circulating a petition, UC regents rescinded an invitation to Larry Summers, the controversial former president of Harvard University, to speak at a board dinner Wednesday night in Sacramento.
Greg Mankiw pointed out, "If there is any place that should be open to a wide range of views, it is a university. To bar a scholar as prominent as Larry from talking simply because you disagree with him is despicable."
I totally concur with Dr. Mankiw's argument, and by the way, I am a great admirer of Dr. Lawrence Summers. Although being controversial and high-profile, his brilliancy in the profession of economics has always spurred the young scholars and students.