The incident stems from a November report by the U.S. media organization ProPublica about how the Chinese government is threatening Chinese students at American universities who openly criticize Beijing, and harassing their families back home.
Kong posted an open letter on a dissident website in May 2020, praising the bravery of students killed during the Tiananmen Square massacre in June 1989, and his intent to participate in a 31st anniversary online commemoration of the event, organized by rights groups, ProPublica reported.