Mary Jane Rein, director of the Center for Civic Friendship at Assumption University (MA), writes:  Among the many ills plaguing higher education is a lack of civility, friendship and intellectual humility. I observed this firsthand on March 13, when an unruly and hate-filled audience shut down a lecture I helped organize at Worcester State University. Because of the response of my own institution, Clark University, I am resigning my position as executive director of Clark’s Strassler Center for Holocaust and Genocide Studies.