I am saddened that we live in a time where people surreptitiously photograph others in public without any thought to ethics. I know it's legal and people should have no expectation of privacy in public but it's tragic to see this gradual erosion of common-courtesy privacy.
From an emotional standpoint I see why this would be an issue (everything you do in public being recorded forever is a bit intimidating) but from a logical/philosophical standpoint, how is this different from someone with a photographic memory? Is it that the images can be shared?