Parenting Ideas: Protecting Kids in the 21st Century

I believe it is parents' responsibility, duty and obligation to not only teach their children morality, ethics, virtue and general goodness, but also to do everything in their power to protect them from the evils of the world. Not that they shouldn't learn about the evils of the world, just that they don't necessarily need to be exposed to them. Primarily, for the purpose of this article, I'm talking about pornography.