Earlier quoted context omitted.
I think you mean there is no reasonable legal expectation of privacy on a public street. I certainly expect that you will not follow me around videotaping me.
People can't follow me around and videotape me, even in a public place. That's stalking or harassment. But somehow if it's online, done by robots (no less creepy), and at the direction of the government, such laws don't apply.
Stalking laws vary state-to-state, but you generally have to prove it is specifically "for the purpose of harassing and intimidating".
See also: paparazzi
See also: http://www.victimsofcrime.org/our-programs/stalking-resource...