Whoa. That's odd. I think it should be illegal for the government to rely / depend on illegal behavior to make money. Otherwise, it seems like a conflict of interest in that there is no incentive to tackle the root cause of crime anymore.
I knew someone who got a parking ticket because he filled his meter. All the cars next to him that didn't bother paying in the first place got nothing. We guessed that the expiring electronic meter signaled the nearest enforcement patrol, and they didn't bother to check neighboring meters that didn't send the "expired" signal.