From libertarian Michael A. LaFerrara:
I submitted this answer:
It would be proper to report the student only if the student’s behavior is disrespectful and disruptive. But really, it is the professor’s job to control his classroom.
That aside, the university’s “Prevent” policy is certainly within the University administration’s right. But that doesn’t make it right. The vague term “extremism,” like the term “hate speech,” is a smear tactic useful only in intimidating and silencing an opposing voice. Racial supremacism may be “extreme”; but so is the view that “all men are created equal” and should be treated as such under the law, regardless of race, gender, sexual orientation, etc.
It is intellectual cowardice to report the student for his views, thus silencing him in the classroom. It is also impractical.