Well apparently some states in the United Police States of America have passed a law that allows schools to ask their students' for their Facebook passwords, in order to prevent abuse and cyberbullying.
http://www.cnet.com/news/new-illinoi...ook-passwords/
On the plus side, those children will get used to being spied on by the government and having their personal information being used by more or less dirty government employees to further their own agendas, or even to further some shady government agendas.
Yes, when you want pass a shady piece of legislation you can always blame terrorists and pedophiles. Freedom and privacy be damned, gotta nail those pedophile terrorists.