I would like to ask a question about ethics involved when nudity is permitted in public places.
I live in Sydney, Australia. At one of the most popular beaches here (which hosts tens of thousands of people per day and is freely available to anyone who wishes to go there), a man was arrested and fined $500. This was punishment because he had been on the beach with a camera, surreptitiously photographing women who were lying on the sand, with no tops on. He was discreet such that almost none knew at the time that he had photographed them - after they apprehended him, police went around with his camera, identifying people and approaching them with the images in hand.
Many people using this beach choose to sunbathe disrobed, of their own free will.
The man admitted that his actions were intended to further his own sexual gratification.
Although I think the man's behaviour was in poor taste, using others as mere means to his own selfish ends, on consideration I cannot see why it should be held...
NB: The categories of this question were expanded to include "Law" and "Ethics", after Professor Soble's response above was posted.