Earlier quoted context omitted.
If a future administration ever has the political power to implement totalitarianism we're stuffed. The lack of a mass surveillance system will not stop them as they will build one. Horrible totalitarian regimes have existed in the past with quite low-tech systems (e.g. East Germany, USSR).
I lived in a totalitarian regime similar to the ones you mentioned (Ceausescu’s Romania back in the ‘80s) and if his bad guys had had access to today’s surveillance tools we would have been really, really stuffed. As things were you “only” had to watch out for people who would rat you out to Securitate or to Stasi (in East Germany), not an ideal situation but manageable from a certain point on, one could live a decen…
I read The Aquariums Of Pyongyang [1] for a take on life and imprisonment in North Korea. Recommended read.
What is your take on Huawei giving 3G/4G technology to North Korea by proxy? Is North Korea technologically advanced enough to abuse technology to suppress its citizens?
Also, to get an idea of the amount of data collected nowadays [2]
[1] https://en.wikipedia.org/wiki/The_Aquariums_of_Pyongyang
[2] https://opendatacity.github.io/stasi-vs-nsa/frame_en.html