I've just been to east Germany and saw in a museum the Incredible pettiness of the surveillance state.
They collected smell samples of supposed activists, and you could be labeled an activist for writing something sarcastic on a poster or newspaper. Also if you were labeled as such they could 'unofficially ' ruin your life (as in thwart your ambitions and goals.
So much money and effort was spent on policing the hearts and minds of the populace. And the frail religious conservatives who run America would probably love the idea.