I really think at this point that it would be more effective for "privacy advocates" to switch gears. Trying to end the war on drugs, legalize prostitution, make the culture more permissive, etc. actually has a chance of succeeding while privacy has only been losing ground for decades at this point.
Miniaturized, cheap, low-power electronics and ubiquitous wireless Internet, plus modern image and audio process/recognition, are the end of it, really. It's over. War's lost as long as those exist, and good luck getting rid of them. Cell phones and giving all our data to 3rd parties who can track us without restriction are making it much worse, but the other tools are there, now. We built the ultimate totalitarian toolkit, and a massive disinformation machine that leaves us even less certain what's "grassroots" and what's enemy action than we ever have been.
We split the privacy atom and no non-proliferation treaty equivalent is anywhere near the Overton window, nor likely to be any time soon.