Calm down, all you lawyer-types; it's only a hypothetical.
Anyhoo, wat do now? We have a legal system to dismantle, law enforcement officers to re-employ and a lot of judges to keep in hookers and blow.
You are wondering how this happened? Well, a drug has been developed that exaggerates a person's empathy sufficiently that even a complete sociopath no longer wants to cause harm or distress to another living thing.
This'll further entail all prisons, probation services and other related lines of work to eventually be phased out, leaving another swathe of unemployed people.
Do we start this drug program, or would it upset the apple-cart too much?
ps. The drug has already been tested on Charlie Manson, who has now become an avid fan of reality tv shows, and an impressive adept of knitting.