There may be some parents who spank their children in anger, which of course no one should do. You should never punish a dog in anger. You're not going to be objective and the punishment will be lost in your anger, but I don't think spanking when done appropriately is bad. I can see why some are opposed to it, and that's fine, but I think it can be an appropriate form of discipline when used appropriately.
lol...I say we should license parents jokingly, but I'm kind of serious. If not licensure I think there needs to be more responsibility placed on parents for their child's/children actions. I feel bad for even suggesting that, but I really feel there are some people who have kids who don't take parenting seriously enough, which leads to delinquent kids with delinquent behavior.