I was a competitive swimmer, and we had a bunch of local guys who'd show up without any connection to anyone on either team during meets. One dude became so obsessed with me and one of my teammates that he eventually got a custodian job at our school, but he was definitely at the swim meets before that job even opened up, and he eventually offered us both (on separate occasions) money to have sex with him (I mean, at least he was offering money, right? ha... college coming up and all).
That said - I grew up in a nudist household, so I gave not a care at all. And I truly will never understand who is "harmed" by being looked at from afar. And when me and my buddy both said "no thanks" to this guy about sex, he never asked again. (Again - who was "harmed" here, besides maybe his pride ... not me and my buddy, because we are human beings and understand that it probably took the dude a lot to even have the guts to ask, and he wasn't forceful). When will society grow up a little bit and realize that the wagging of fingers at people for just trying to live in their own world of desires without losing it completely does nothing to help, and in fact usually is what causes "harm" ... When someone physically forces themselves on you, then you can claim you have been harmed. But up until that point, get over yourself and realize the world is full of all kinds of people and that when you're in public, you've inherently signed up for being looked at by whomever wants to.