what is the worst thing a parent can do to their child?

The worst thing a parent can do to their child is beating them. If you beat your kid you don't need to have them. let somebody else raise your baby's if you are not doing your job as a parent. The parent's that are beating there kids don't let nobody tell them how to treat there kids. When the kid's grow up they will remember that and hold on to it until they have some kid's and do the same thing they parent's did or try to be a better parent than there own.