Got to get their attention before you can reasonably and logically point out the errors in their ways.
When you are in a restaurant, and the waiter fails to bring what you ordered, you punch him, right? Or do you just slap him? After all, you have to get his attention, right?
When your elderly mother gets forgetful, you slap her, right? So your children can see that you treat them with the SAME respect you show to your mother, right? You wouldn’t want your children to see that you respect your mother, but don’t respect them, right?