If one goes to a function or a gathering photographers and vedio cameramen are a familiar scene. If one is conscious of himself/or herself and do not want to be photographed they should avoid such places, rather than expect to be asked before being photgraphed. that is so absurd!!! I think the celebrities of the US can afford to make objections as their photos can make a good story if taken in odd circumstances and can fetch a lot of money, but otherwise my advise is smile before a camera and always dress up decently while making a public appearance to avoid future embarressment.