Back when I was a student those who wanted to suppress free speech had a policy called
"No Platform for Racists and Fascists."
Among the problems with this policy, it wasn't just racists and fascists it was used against. One college student union in Sunderland even banned their Jewish society and called it an "anti-racist" policy because supposedly "Zionism=racism." I remember taking a trip to Sunderland to protest against this.
Opposition to this was one thing which united Conservative students at the time: I also remember attending a meeting in the House of Commons hosted by Fred Sylvester, then a Conservative MP in Manchester, who tabled an excellent private members bill designed to safeguard free speech in Universities.
The issue is as much if not more a problem today, and so the government has brought forward the Higher Education (Freedom of Speech) bill to address it.