Royal... I was really hoping for an answer that puts reason to this logic.
Instead, you're only issue with it is the use of a dull knife and insufficient authority.
Plenty of people switch to Islam. The religion they leave doesn't punish them because they have some common sense. God gives people a brain to make their own decisions. Why are these idiots taking matter into their own hands?
Retarded.
So as long as someone of authority uses a sharp blade, it's all good?! Disgraceful.