First of all, I would say that it is a chicken-and-egg situation, where we try to determine which of the two comes first. If the right to use corporal punishment were removed, over time, children would be raised in environments that are less and less violent and would be less likely to engage in such behaviours as adults.
Furthermore, I deplore the lack of consideration for the entire social intervention and child welfare community. I'm pursuing a degree in social work. I recently spoke with one of my professors who worked as an evaluator for more than a decade for social services in Quebec. He said that, at present, more than 80% of parents from whom children are taken are not subject to any criminal charges. And yet these are children whose development has been proven to be compromised because of the corporal punishment they suffer, which leaves scars that will stay with them for the rest of their lives. Currently, these parents are getting off scot-free.