It's because if they don't arrest or prosecute people for committing crimes, those crimes don't show up on the stats. Then they can say "Look! Crime rates are going down! Please stop fleeing this sinking ship!"
It's all about trying to trick people into believing it's safe. Easier than actually making it safe.
So they want nothing to do with stopping actual crimes but will stop people from doing their jobs? Sounds incredibly on-brand.
It's because if they don't arrest or prosecute people for committing crimes, those crimes don't show up on the stats. Then they can say "Look! Crime rates are going down! Please stop fleeing this sinking ship!"
It's all about trying to trick people into believing it's safe. Easier than actually making it safe.