You're right, but there's a crucial and fundamental difference between surveillance and posting to social media: the second is voluntary. The poster has chosen

You're right, but there's a crucial and fundamental difference between surveillance and posting to social media: the second is voluntary. The poster has chosen to share whatever it is. They may not be completely aware of the full range of consequences, but it's still their choice. In some measure, the tech is empowering them to do this thing that they want -- to be noticed. Surveillance -- including stuff like profiling people by analyzing their voluntary social media posts -- is imposed on a person by someone else. It is taking away the surveilled person's free choice, and its entire purpose is to gain power over them. There's also absolutely no inherent reason that surveillance -- the deliberate steps of gathering/cataloging/analyzing -- has to come along with people being able to post things in public. That's just a f'd-up practice that our society has adopted.