"Putting the photo of someone on Facebook (or Instagram) contributes to surveillance of that person. Please don't post any photos there that include me, and I suggest you avoid posting photos of anyone else too."

I wish Facebook (and G+ etc.) users cared, I really do. I also wish they didn't share their contacts with Facebook (and WhatsApp, LinkedIn, etc.) Of course nobody cares, so you can't really opt out of these social networks.