Police and prison officers are trained to keep society's most violent offenders in line - but what happens when their fists are used against each other?
Over the weekend a charity boxing event was held to raise money, ironically for domestic violence.
In the blue corner were the boys in blue, who keep the streets safe and protect us from harm, and in the red corner were the operators of New Zealand's prisons.
Watch the video for Laura Frykberg's full story.