You can also take it to far by killing your kids. Because in America two parents killed their three year old daughter Alexander. It was said by the cops that the father used to lock her in the room and make her wear a dog collar.
The mother never used to take the daughter to the doctors because she was always covered with buses and they would call the police or something like that on them. So I think that people who abuse kids are losers who pick on people who are weaker then them even if it's their own kids.