Furthest back I can personally say anything about for the ramp up of ubiquitous surveillance was seeing the 1999-ish Echelon report the the EU:
http://www.duncancampbell.org/content/echelon
While the scope was somewhat more limited (and more narrowly targeted) than current programs (targets being things like interception of spillover from point-to-point microwave relays, etc etc) similar questions were raised. Handling of info derived from phone call relays involving US citizens only vs mix of citizens and foreign nationals vs foreign nationals only. Scope of activity vs. charter of organization(s) doing the data handling.
Anyone have some discussion of the downward slide starting earlier?
[...] states sponsor terrorism but states do not sponsor crime.
Highly variable. https://en.wikipedia.org/wiki/Superdollar
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