Substantially reduce the amount of alcohol allowed in RTDs. Set up a system with Drivers licences and 18+ cards that records if you have been convicted of an offence related to alcohol or domestic violence and then have your ability to purchase alcohol revoked for a period of time, every person would then be required to provide ID to purchase alcohol. Surely alcohol kills more people than guns in NZ but we require a licence to own a gun. Maybe limit the sale of shots after a certain hour.