This is a fail, but, you know, I like this idea just because the implications if this were to exist would be hilarious. Who wouldn't want a big red button that shuts off the entire internet?
Not that it's a practical idea whatsoever though. If such a button exited and someone pushed it, there would probably be economic disaster, not to mention a big 1st amendment-oriented civil rights dispute. It would also be impossible to account for every single server and network at once.
Please feed the trolls. XD