Harsh, but party to the offence.
The definitin holds all parties equally guilty to any offence committed in the commision of a crime.
Look up the English case of Bentley, where the killler was too young to be hanged, but Bentley who was even on a. Different part of the building, was hanged as a party to the offence.
The shining light in all this, is that they wont commit further crime and the taxpayer wont be paying hundreds of thousands for upkeep
Well, if you are going to justify judicial killing just because it was once done for a particular reason, then lets bring back judicial killing for adultery. Death by stoning was the method used. That'd end up with a shitload of judicial killings, eh?
Some people prefer to live in the barbaric past, eh? Good job we got civilised in NZ, unlike those despot nations which include Iran, Iraq, North Korea, the USA, China, Indonesia and others of a like barbaric ilk.
I have absolutely no difficulty with the concept of capital punishment.
Perhaps it arises from actually dealing with the evil denizens that infest our world, as opposed to those who live in a happy state of oblivion and denial.