Gareth McMullah, head of lobby group the Rational Sentencing Institute, called for courts to adopt a new policy of medical disfigurement for violent criminals at the March for Freedom rally today.
"Rapists should be castrated, aggravated burglars should have their hands cut off and murderers have their legs amputated," said Mr McMullah in a speech to an audience of around 3,000 people holding placards and waving small children above their heads.
The policy follows similar statements from the RSI earlier in the year, which included the right to assault children and a return to capital punishment for violent offenders. However, this is the first time the RSI has publicly supported dismemberment as an alternative to prison sentencing.
Mr McMullah also mentioned that RSI researchers are putting the finishing touches on their minor crime platform.
"Recent studies at Leviticus University in Alabama have shown that breaking a tagger's fingers is a much cheaper and more effective deterrent to future criminal behaviour compared to fines or community work," said McMullah enthusiastically.
A spokesperson for Police and Corrections Minister Judith Collins has said the minister, emboldened by the passage of her car crushing legislation, is open to other new and old ideas for cruel and unusual punishment.