Why Privacy Matters

You might not worry about your privacy online -- since you're not doing anything you need to hide, right? But at TEDGlobal, journalist Glenn Greenwald suggests that even perfectly law-abiding people have the right not to be watched online. Why? Because when we know we're being watched, whether it's by a camera, a guard or an email sniffer, it changes how we act. Hear a case for privacy you might not have considered.