FYI, China has a very vague definition of crime of “Inciting subversion of state power” in their law, which is bascally “whatever they accuse you”. There’re already a lot of case of prople being arrestd for these kind of politcal or non-crime reason. With this in mind, you should be able to understand that HK people oppose the exradition bill in afraid of Chin.a can accuse and make HK official arrest whoever they want to send to mainland China.