In Hong Kong, some activists are marking the 35th anniversary of the Tiananmen Square massacre despite a ban on protests and a heightened crackdown by authorities. On Monday, police arrested artist Sanmu Chen as he engaged in a protest performance. In the middle of a busy street, Chen appeared to mimic pouring himself a drink and toasting, followed by drawing the numbers “8964” in the air with his fingers — the date of the massacre. On June 4, 1989, the Chinese military attacked a student-led pro-democracy protest in Beijing, killing hundreds, if not thousands, of people.