The madness has spread to Australia too. I was in Melbourne a couple of years ago and the police decided to "crack down" on knife possession. What that meant was that they swarmed the commuter train stations (Flinders St and Southern Cross) and ticketed every businessman/woman who had a penknife or any other kind of blade in their pocket or briefcase. If the person was under 25 or not dressed in a suit they arrested them. Public safety ensured.
Police around the world seem to have lost track of any bigger picture and become obsessed with targets and meaningless goals. Increasingly in the US, UK, Australia, and NZ this means ignoring complex crime prevention and handing out tickets to middle class people who will pay them and not run away from or swing at the officer in question. Cops write lots of tickets, targets met, fines paid, "crimes" solved and everyone is happy except for those of us who wish the police would actually address real, complex, difficult tasks.
The knife obsession in the UK and Australia is weird (and seems to avoid cops actually going to poor areas and addressing real violent crime) as is the marijuana obsession in the US (cops tell people to turn out their pockets and then arrest them for "having weed in public view").
I really don't know where to start on fixing these fundamentally broken systems.