Hong Kong’s new museum of visual culture, M+, has decided to exclude a number of my artistic photographs from its opening exhibition. The problem? One photo in my Study of Perspective (1995 – ) series shows me giving the middle finger to Beijing’s Tiananmen. Others show me doing the same to a number of other politically or culturally hallowed structures around the world; in Hong Kong, though, the “national security law” that China’s central government passed last year has ruined the local political environment almost overnight, and has left the Chinese government’s promise of “one country, two systems” as mere…