“When you have more crimes, you need more cops—and when you have more cops, you find more ways to use them. (In the US, for instance, we consider it normal to have armed police officers enforce compliance with traffic regulations, even though most traffic violations don’t constitute criminal offenses. It’s the equivalent of routinely sending armed police to enforce IRS regulations or municipal building code regulations. It makes little sense, and increases the number of police-citizen encounters with the potential to go badly wrong.)”