1) These kids aren't evil and certainly aren't beyond redemption. They do need to be disciplined (i.e. they need to see there are bad consequences for their inappropriate actions).

2) I can't understand why the wealth of the parents is a concern. I don't think this behavior is correlated with wealth.

3) Be a parent and not a friend to your children. Discipline them when they mess up (and they will mess up in big and small ways). Don't feel bad about it, feel good that you are reigning them in before they show up on YouTube.