campaign against free speech on the open exchange of ideas. the problem is worse on college campuses. at the university of pennsylvania a panel discussing u.s. immigration policy was canceled completely after a student protest against inclusion of the former i.c.e. director. >> go home! go home! go home! >> tucker: annual poll finance 51% of americans and 57% of the millennials in the first amendment goes far in protecting the free speech and should be updated to rollback that right to bear the majority of those who believe it think that people who commit so-called hate speech ought to go to prison. a philosopher, author of the book, "how to have impossible conversations." a legend among people who follow life on college campuses that were honored to have them on. thank you for coming on.