I disagree with this answer so much. An individual taking a picture of you is doing it for a specific reason - because they find your appearance interesting. Chances are THEY WANT TO SHARE THIS IMAGE. In this day and age this can quickly lead to YOU GOING VIRAL. Clearly this is very different to surveillance. By confronting the individual you can't change what happened, but that person MIGHT NOT DO IT AGAIN. You therefore helping create a culture where this is not acceptable — Phill 46 secs ago