Two conferences in two European cities. Two attempted bans (though only one successful). Two different responses from politicians and the media. All of which tells us something about the state of free speech today. Last Tuesday, Emir Kir, a mayor in Brussels, created international headlines when he tried to ban a National Conservative conference in the city. The attempt failed, denounced as “unacceptable” by the Belgian prime minister, Alexander de Croo, and ruled unlawful by the top administrative court. Five days earlier, with far less comment or condemnation, Berlin police forcibly shut down a conference on Palestine. Ghassan Abu-Sittah, rector...