Is that really the right course of action, given the protests are a push back against China asserting control and surveillance over HK's citizens?
My gut reaction is these attackers are from mainland China and who have been organised by an official in order to try and reduce HK's tendency to protest (a sentiment echoed in that article as well).
Also government mass surveillance and identifying people who were recorded in public by a citizen commiting violence aren't the same thing. I wish I didn't have to explain this.
That is not true that there would not have been any process.
There would have been a full legal process like any extradition: I.e. extradition would have been requested based on a legal case, this would have been examined by a HK court with the 'accused' able to defend, then that HK court would have made a decision. [That's the actual bill]