> Probably most Tor exit nodes are run by agencies trying to snoop on traffic.

Well, that would explain why the nodes don't get shut-down when the local police come knocking...

Still, that must require some very awkward conversations when ethics committees or even departmental budgets are approved - not to mention inviting consternation from the general-public who really don't approve of their tax-money being used to knowingly facilitate dark-net activities, especially horrific child abuse, ugh. (I'm a utilitarian myself, but personally I'd pull the plug on it: surely there are better ways for embedded agents to exchange information? What about digital-steganography, and concealable satellite comms hardware?)