...and that's how and WHY they get away with this. This is against any human rights, but shout "won't anyone PLEASE think of the Children", and these agencies can get away with murder.
So that said, to any whistleblower out there who doesn't have the tech savvy that we have, I'd offer a little bit of advice, read it - and don't forget it, you might just be next if you do:
1) Download Tails. Install it preferably on a CD.
2) Remove your hard disk connection (removing the power is enough) when you intend to boot from Tails.
3) Shut down your WiFi. And only use WIRED connections.
4) Boot tails, and when you start Iceweasel - make sure to turn NoScript ON for ALL sites. It's not on by default, when the SHIELD shows...it's on!
If you really need to be anonymous, use a computer that you bought for cash, that is ONLY used for communicating over Tor with Tails, preferably using somebody else's Wi-Fi. Even if the Feds do manage to plant a beacon on this computer, it will only show up when you are communicating anonymously. Your secure computer should be air gapped from your main work/internet computer.