The fact remains that taking photos of people without permission (in particular little children) is considered by many as unacceptable behaviour today. This man should have been sensitive to this. The odds are that he wasn't a perv but trying to take some reportage type shots in the surroundings he was likely to cause unease. You could argue for hours about privacy/nanny states etc but in this instance the OP clearly felt uncomfortable with his behaviour and did what she felt was right at that time. I got the impression that rather than trying to create mass hysteria on the forum that she posted as a point of discussion - was she overreacting, would anyone have done the same and it's difficult for us to say without being there. It brings me back to a time on my travels when one of my companions was trying to take atmospheric photos of the souks in Dubai - she tried to surreptitiously include a group of arabs - but one of the men saw her and came over and lectured her on respect, decency and how she should have asked to take the photo - which they would have agreed to. Although I'm not sure a row of men smiling - saying the arabic equivalent of 'cheese' was the look she was after.