I am loathe to give the smug Swedes credit for anything, but there is this. The United States is not on this list. South Sudan, Congo, Guinea, Benin, and Zambia, yes absolutely, but not the US.
If you are over five feet tall and you find yourself beating another human being under, what, four feet tall, three feet tall, two feet tall? (pick for yourself), you should go to jail.
You belong in jail.
Think about it this way. If you commit assault and battery on someone else's child, that would be a serious crime. So what is the difference if the child happens to be your own? Why do you receive immunity for such crimes because the child is yours? It is interesting, we do not apply this immunity for murder or sex crimes, etc. But we do for assault and battery. It makes no sense, and it never has. How is that Congo understands this, but the good people of Canada, the United Kingdom, and the United States do not?
I could not care less what was acceptable for your parents. Or your grandparents. Or your grandparents' headmasters. Or that times have changed. There was a time when children were basically considered property. None of these are sufficient arguments in favor of the practice. My mother would not gently swat her dog on the nose with a rolled-up newspaper, but she had no problem beating her children. Just imagine.
Parents strike their children for two reasons and two reasons only. One because they are angry, and two, because they can (without consequence). I have written previously on this topic.