Pedophiles do nasty things on the Internet. Uncovering pedophiles on the Internet is impossible without mass surveillance of the Internet. How do you suggest that one should go about proving that someone is a pedophile?
In both the case of pedophiles and state actors who are breaking the law, the answer is the same. Wait for them to slip up. It's hard to keep something secret forever.
That's sort of the point. When someone justifies an action because it's "impossible" to stop bad thing X without doing morally questionable thing Y, be skeptical.
In both the case of pedophiles and state actors who are breaking the law, the answer is the same. Wait for them to slip up. It's hard to keep something secret forever.