As others have pointed out, HK government is not historically oppressive, physically speaking. So if the protesters initiate violence without being provoked, mass opinions may change real quick.
IMO we better consider this on a case-by-case basis. If non-violent protests can and will work in more places in future, why not?
Like I said, I hope they work, but I see no reason for the HK government or Beijing to respect this, given there's no actual threat of the people protesting in a more forceful way.
There was supposed to be a general strike tomorrow (Monday), but since the government has suspended the legislation, it seems to be called off (I said "seems" because there is no clear leadership in the current protest movement).
IMO we better consider this on a case-by-case basis. If non-violent protests can and will work in more places in future, why not?