During the last decade, free speech groups accused some colleges of using vague concerns about “safety” as an excuse to cancel events that were likely to attract counter-protesters. What kind of security was there yesterday at the Charlie Kirk event? Free speech has been such a live issue on college campuses for other reasons in recent months. KASTE: You know, campus security experts tell me, no. And during those years, free speech groups such as FIRE would accuse the colleges of using undefined safety concerns as an excuse to cancel or restrict those appearances.