A series of near-riots on campuses aimed at silencing guest speakers has exposed the fact that our universities are no longer devoted to the free exchange of ideas in pursuit of truth. But this hostility to free speech is only a symptom of a deeper problem, writes John Ellis.

A series of near-riots on campuses aimed at silencing guest speakers has exposed the fact that our universities are no longer devoted to the free exchange of ideas in pursuit of truth. But this hostility to free speech is only a symptom of a deeper problem, writes John Ellis.