The police are going to watch us with drones. These will catch those vicious terrorist flytippers and bin fillers and bad parkers and people with a bottle of wine with their picnic in the Puritan Zones. Rapists and murderers need have no fear. They aren't looking for you.
You don't need an airgun. The drones work well in places like Afghanistan and Iraq and northern Pakistan because there's little to no RF interference. A long time ago I admitted to hanging around with radio-control aeromodellers. You can bugger a radio-controlled model with a RF wideband broadcast. It's harder to spot than any kind of gun because you can press the buttons while it's still in your pocket. Find a spiteful aeromodeller, they'll already have made one.
The police are busy chasing down Al Crochet operatives who have been plaiting horse's hair. These devilish knotters have sneaked into horses' stables and done no harm at all to animal or owner but they are Deviants and therefore justify the expenditure of enormous amounts of police time and taxpayers money in finding them and bringing them to what is laughingly termed 'justice'.
Meanwhile, psycho killers are released among us.
I wish we really were heading back to the Middle Ages. At least it made some kind of sense back then.
I also wish I hadn't started writing a dystopia novel. There's just no point in trying any more, is there?