This might sound weird, but I think the primary "victim" here might be parents, not the children. Here's an (admittedly imperfect) analogy: There are a lot of

This might sound weird, but I think the primary "victim" here might be parents, not the children. Here's an (admittedly imperfect) analogy: There are a lot of reasons to oppose constant government surveillance, even if you're not a criminal. But one of those reasons is just the simple fact that, as human beings, we are psychologically stressed out by the fact that someone might be watching us at any moment. Even if I'll probably live my entire life without feeling any tangible effects of the surveillance, believing that it's out would be a legitimate harm to my quality of life. Parents are entitled to be legitimately troubled by the fact that pedophiles are thinking of their children in their sexual fantasies. That's not "imagined" harm; it's real. After all, psychology is what it is, and it's not changing any time soon. Of course, enforcing any rules/laws against such behavior will be tricky, but probably not impossible.