I don't see the problem. It sounds like I'm in a public setting. If not and this is some friend group gathering I could just ask you not to since we're friends. My friends and family that use facebook know not to include me. But even if they do, so what? It's not like a single photo of me uploaded by a friend impacts my privacy.
There's a difference between being a random bystander in an individual's photo and mass surveillance of the public space through millions of photos. Just like lots of photos become something else - movies - lots of photos of public spaces become something else - a surveillance state.
You're sitting on one principle and riding it to the point of absurdity. There are lots of other principles, like the right to live in a free society. Sometimes freedom requires lack of freedom - sometimes we have to apprehend criminals. You can't ride this principle all the way without taking off your blindfold.
