This is a business, it have to be paid in schedule, down-payment in millions, to buy arms and hire mercenaries, then weekly or even daily progressive payments - according to the number of killed rioters BODY-COUNTS. Essentially will be sniper jobs done from high positions like roof top or windows. Take reference from Las Vegas shootings. Strategic advantageous positions will be secured by my gunmen armed full of guns and ammos, and delivered by helicopters. Night vision Optical Sights binoculars Electroptical Devices of Military Grade will be use to track and aim down at frequently rioting spots. E.g. Legislative Council Ports Airport Govt HQ police HQ MongKok Tsim Sha Tsui Causseway Bay etc. Rioters / Mob appears we will give them barrage of bullets aim for MAX LETHALITY.
You can gun down 300k in a single day, make no arrest. Arrest will cost you burden death is better. Prisoner are burdens, you need to guard them and feed them. Let as many die as possible within shortest time.
How you do it?
You lure them you bait them you induce them you provoke them and trick them and make them gather, when they have large enough numbers you unleash your carnage they had it instantly.
You release a trick video of particular police torture one of the protesters on the street on internet to provoke their anger, make them gather, and you release on FB pretending to be one of them that you spotted the particular BAD COP at certain location, lure all of them to go for the bait. That is where you lay huge death trap to give them a big carnage. They will gather few hundred thousands to protest. You position high and make a siege ambush cross fire cut off all escape routes, shoot like video games. They will die even by stampede more than being shot.
One day, one big carnage simple and HK will be peaceful for decades.
This is how perfectly the Tian An Men did. One big carnage and 30 years of smooth easy rule.