Technology

It sucks that this is the mechanism we have to use for this but a person's likeness is their own copyright and posting images of someone without permission could be seen as copyright infringement. Granted this also opens a lot of doors to just completely eliminating almost all images from the internet, like imagine going to a tourist destination and having to get permission from anyone who might be in your overdone posed tourist photo.

Edit: Since some of yall are dense motherfuckers and/or just arguing in bad faith, I'm pointing out how going using copyright as the enforcement mechanism opens the door for these already flawed copyright systems to be heavily abused even further. I'm specifically pointing to Right of Publicity, where your likeness is protected from commercial use unless you give permission to post. It's why any show or movie that's filmed in a public place blurs people out if they haven't gotten signed release forms from anyone who appears on camera.