In Nineteen Eighty-Four, mass surveillance is allowed to exist because of the application of force (torture and murder). It's a dystopia founded in violence and oppression. We like to think things are like the book, because it paints us as victims.
However, the truth is that, at best, we're complicit. This reality is explored in the far more prescient Brave New World.
This surveillance is allowed not because people are afraid to protest, but because they don't care (or rather, they care more about other [meaningless] things).