Like I said, there's legit child abuse, for which the parents should be severely punished. But we've gone so far over that raising your voice to your kids in a public place will get you chastized or worse. Worst of all, the kids know that, and play the system for all they can get in many cases.
I wasn't a perfect kid, but I knew better than to get into trouble with the cops, etc., because no matter how bad I got it from someone else, from Dad, it was gonna be WORSE, guaranteed.