Books about the Tiananmen Square massacre, Hong Kong protest movements, and other subjects deemed politically sensitive by Beijing have been removed from the former British colony’s public libraries in the lead-up to the 34th anniversary of the killings. Hong Kong media have reported a marked increase in the number of book and documentary removals, which have been growing since the authoritarian clampdown on Hong Kong’s pro-democracy movement and the introduction of the national security law in 2020. It has resulted in a major curtailing of political freedoms in the city, and multiple arrests. Late last month, the government’s audit commission...