Think of it this way. Let’s say the government suspects you are a terrorist and it has access to your Facebook account. If you’re an American citizen, it can’t do that currently (with certain exceptions)—but for the sake of argument. So all of your friends, that’s one hop. Your friends’ friends, whether you know them or not—two hops. Your friends’ friends’ friends, whoever they happen to be, are that third hop. That’s a massive group of people that the NSA apparently considers fair game.
"While not currently permitted under U.S. law, there are increasing calls for creating a more permissive environment for active network defense that allows companies not only to stabilize a situation but to take further steps, including actively retrieving stolen information, altering it within the intruder’s networks, or even destroying the information within an unauthorized network. Additional measures go further, including photographing the hacker using his own system’s camera, implanting malware in the hacker’s network, or even physically disabling or destroying the hacker’s own computer or network."
Oh I’m sure that would never be abused.