Corporal punishment is cruel and very vile as well as unacceptable in regards to any kind of punishment in any country. Cultures are diverse and difference. It is the human element and the human factor that connects us all. Therefore when corporal punishments are upheld it is derogatory to civilization.
As humans we are simply not at a point where we can be trusted to sufficiently inflict corporal punishment without abusing the other person or taking sadistic pleasure from it. We have seen in the Milgram experiment and even in observation of our troops that power does something disgusting to human beings. They descent to sadistic lower beings or maybe even perhaps they just show their underlying true form.