As technology progresses, eventually at some point those in power of that panopticon can actually grab the pendulum before it swings back. That's what you really have to be afraid of: if the surveillance programs get enough of a head start on the people recognizing their own government is watching their every move, they can cause enough havoc behind the scenes that whatever the people end up getting mad amount they can give up for PR, and just continue as usual with any and all of the other programs they didn't figure out.
It's debatable where that point is. I don't think we are quite there yet, but I expect we'll get there in our median lifetimes unless the American people do more than privacy slacktivism.