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And if they are public photographs there is no reason they need to give consent for their use. Don't confuse consent for usage of ordinary public photographs with consent for participating in pornography.
This right here scares me. I suppose I could try to be 'William Forrester' and never leave my home, paying for people to bring all my 'needs' to me. However, real life dictates that I must leave my home and go out into 'public' to lead a somewhat civilized life.
So if someone takes a picture of me out in public, are you saying that they can do anything they want with that photo of me without my consent?
Brain off-line, please wait.