I invite you to look up "The Four Horsemen of the Infocalypse". Child Pornography is but one of the well trodden paths to remove privacy and security.

"CSAM" is an easy target because people can't see it - it would be wrong for you to audit the db because then you'd need the illicit content. So its invisible to the average law-abiders.

France has been pushing terrorism as a justification for mass-surveillance in the E.U.