Should parents spank their children in public?

The other day I was out with my boyfriend and his mother, we were at a nice restraunt with a small family seated beside us. The two siblings were arguing and kept bugging their mother to tell the other to "stop looking at me." The father looked very annoyed and he kept exhaling deeply.After about  two minutes g the kids arguing. The other slammed his fist on the table and grabbed both kids by their wrist and lead them into the restroom we were all seated by. He yelled at them that they are embarrassing their mother and ruining dinner. Then he spanked both a good 2-3 times and they screamed and begged him to stop and he just yelled at them to go back to the table and act civil. Do you think parents should spank their kids in public?

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