Earlier quoted context omitted.
I don't know. What do you think they would've done to suppress dissenting political opinion? Which is where this whole conversation goes to hell - the trailed off sentences where people assume they actually have a clue what dangers they're talking about. Because if your problem is "oh, someone might find out about someone's mistress and tell the media..." well - the problem begins and ends with the fact that their vo…
"What do you think they would've done to suppress dissenting political opinion?" Easy. You use government power on them. You "coincidentally" hit them with an IRS audit, one that's incredibly hostile and refuses to resolve itself. You hit their business with every inspection possible, held to the most stringent of standards. Even if, and perhaps especially if, they don't own it, and you find a way to sufficiently hin…
You then postulate the US government just ignoring the law altogether.
You see the pattern right? All these are things where the US government does some questionably legal, pretty highly visible stuff to you. It's not unintrusive electronic surveillance.
Or to put it another way: the Soviet government didn't start out surveilling their citizens before they just murdered all the ones who were considered dissidents. They started doing it after they needed to get better at murdering the dissidents. But the real problem, was the fact the government was willing to murder dissidents. Has the US government killed a bunch of your neighbors? Disappeared them?