Over the past decade, campus political activism in liberal-democratic nations has come under critical scrutiny for many perceived excesses: woke groupthink, illiberal de-platforming tactics, intimidation, violence and, more recently, anti-Semitism. But less sensational cases where the kids (or profs) get it right tend to fall out of the news cycle quickly.A recent student protest against an invited speech by populist Sanseito party leader Sohei Kamiya at the University of Tokyo is one instance of them getting it mostly right, even if the speech was canceled by an anonymous bomb threat. That threat attracted more mainstream media attention than the protests...