You should read Dean Martinez's letter, which describes the longstanding legal perspective on this. Although one can always raise philosophical questions and cl

You should read Dean Martinez's letter, which describes the longstanding legal perspective on this. Although one can always raise philosophical questions and claim that free speech advocates are just trying to silence people that don't agree with them, this isn't really an accurate representation of their position. Actual free speech advocates (e.g., FIRE) want their opponents to be free to host talks without disruptive heckling from people with whom they (the free speech advocates) would agree.