Tell that to Parsons, Winston Smith's loyal to the Party neighbour who's betrayed by his own child. If surveillance is allowed to become pervasive enough, nobody is safe.
"Ah yes, we can see that boring Johnny goes to Starbucks every Tuesday at 9am, nobody will believe the crime we're about to pin on them! Thanks to 1984 Incorporated for giving us all their data about him to make it look like the perfect crime."
The people who were massacred at Hue would likely attest to the falsity of that fact if they had somehow survived.
The general story is the VC (communists) took Hue during Vietnam and their leadership had information that had been collected by the Russians on who spoke with Americans as dossiers.
Once they took Hue, they went door to door clipboards in hand and killed every single family that had an American connection.
Even today, the death estimate is not solid as they burned a lot of bodies before a count could be determined after-the-fact.
That massacre largely wouldn't have been possible, or as targeted without information gathering done beforehand. Any covert information gathering is an openly hostile intention and act. Its a necessary pre-requisite for any successful attack on your person.