Why do you think anyone is entitled to upload photographs showing other people to the internet where they are completely out of control of what happens next?
Because that's what public space is? We've always held that principle, and I don't think 'reach' should affect that. If someone takes this to the extreme (i.e. follows you around in public, taking thousands of pictures and uploading them in real time) they can be charged with stalking, harassment, or a similar offence.
To turn it on its head, if you cannot take photographs of people in public without their permission, then we basically lose the ability to take any photos of public space.
Man you would hate flickr. Also, never said anything about that. I don't have any social media, so the photos die with me and my friends. It's a nice break from modern technology to spend hours on an analog process. If you're in a public place you're probably getting photographed so I'm not sure what you're trying to say.
Because we in the global west generally have the right to photograph anything we can see in public, save for pathological places like Germany or France. You don’t own your image. If you go into public and I take a photograph of you, I hold the copyright on that image, not you. You don’t have any say in what I do with my (legally obtained) image taken in public, nor should you.