Hong Kong unionist Joe Wong had applied for permission to hold a Labour Day march, but cancelled his request to police in an abrupt U-turn after he briefly went missing. He cannot reveal what led to the change of heart, a result of a confidentiality clause in a sweeping national security law Beijing imposed on Hong Kong in 2020 to quell dissent. Three years after the law’s enactment, activists say Hong Kong’s police have stepped up surveillance — pre-emptively discouraging rallies before applications are filed, paying home visits in the lead-up to days seen as politically sensitive and...…Hong Kong unionist Joe Wong had applied for permission to hold a Labour Day march, but cancelled his request to police in an abrupt U-turn after he briefly went missing. He cannot reveal what led to the change of heart, a result of a confidentiality clause in a sweeping national security law Beijing imposed on Hong Kong in 2020 to quell dissent. Three years after the law’s enactment, activists say Hong Kong’s police have stepped up surveillance — pre-emptively discouraging rallies before applications are filed, paying home visits in the lead-up to days seen as politically sensitive and...WW…