IMO, when they have to hide, that's the beginning of the end. Too many people are aware of the what/why now. And above all else, once the tables turn on elected officials and they realize they're under the same surveillance, I bet their tune will change (likely due to a public egg-on-face moment involving illegal or suspicious activity). If people keep the pressure on, this will be a "remember when" rather quickly.
Some of that is already happening, in DC of all places, where the DC Police Officer's Union is protesting against use of Flock by ... the DC Police (albeit Internal Affairs).
Something about "this technology is invasive and violates the right to privacy of our members"...
Government officials should be highly transparent. Privacy for the people, transparency for the government.