Though I’ve had my share of unfounded worries in life, one bug I’ve never caught is hand wringing over state video surveillance. I suppose it’s primarily because "privacy" is only a right as it relates to being free to pursue my own values in peace, free from preemptive interference from the state. Get the essential right, and privacy takes care of itself.

The other reason is that it’s only out in public, where — for the time being, at least — they’re talking about state surveillance and you simply don’t have any reasonable expectation of "privacy" there. People see you, in case you didn’t notice. Your image is embedded into the photographs of potentially hundreds of people worldwide who have happened to catch you in the background while snapping a picture of something else (and with higher and higher mega-pixel resolution, it’s going to be less and less relevant how far away or "small" you are as a function of the photo’s size).

And now this.
Seven minutes and change. You’ll think the first part is way cool but
you haven’t seen nuthin’. Wait until you get to the punchline. Next up:
video, of course. And after that? Integrating facial and voice
recognition algorithms in order to potentially find anyone worldwide
who happens to venture out into public. So remember this. Privacy for
privacy’s sake will be increasingly impossible for non-hermits. So you
need to pay attention to the power you vote to the state. And make no
mistake: every time you enter a voting booth you are principally voting
to extend and usually expand the power of the state over your life.
That’s where you’re getting it wrong and not in the various derivatives.

(link: davis)