[isaaafc]

Late to the party but thought I'd clarify because some comments are extremely misleading.

He's a member of the Astronomy Club. Also 7 Aug, the following night, is the "Seven Sister's Festival", a traditional festival in Hong Kong which stargazing is a common activity to do during.

Stargazing was a perfectly legal and reasonable intent. Not to say he was definitely not involved in the protests, but there was absolutely no evidence that he intended to use them as weapons.

The officers who approached him didn't show their warrant card at first. They also held his throat. Given the current situation in Hong Kong (triad members attacked citizens in public on 21 July and 5 Aug in 3 different places, and NO POLICE arrived at the scenes until well after the incidents, and so far no attacker is being prosecuted, despite the abundant video footage of the attacks), running away also was what sane people would do when they're threatened by 4 men with dubious identities.