Any form of punishment of any human being is cruel and unusual. Instead of punishing an individual we would be better of educating them in the path of nonviolence. Existential justice is achieved thru “radical reincarnation” where all minds transmigrate to all bodies and all bodies contain all minds with the experience of “anyoneness” where each of us is each of us. Where I will directly experience all the joys and sufferings I help cause in another’s life and where each of us experiences all the joys and sufferings in my life.  And where everyone will experience all your joys and sufferings. And you will experience everyone’s joys and sufferings.