I'm of the belief that if a law exists but isn't being enforced, the only correct course of action is to eliminate the law or start enforcing it. Otherwise, you enforce the law inconsistently, and you reinforce the notion that laws don't need to be followed.

Technology can help with consistent enforcement. Stop light cameras, in my experience, are more impartial and objective than police officers.

Where I live in the U.S., crime is prevalent. Many laws are flouted by criminals and rarely enforced by the police or district attorneys. The system has become a farce. It's better to enforce the laws consistently, or if they're not needed, to eliminate them.