After decriminalization of possession of small amounts of marijuana, some police are refusing even to enforce the new civil law, because it's too much hassle for too little reward and, in their view, unenforceable. There's a certain whininess involved here, and perhaps a desire by the police to undermine a democratically-backed law. At the same time, a collapse in enforcement might simply reveal this was hammer in search of a nail and a government in search of a problem.