>There is not generally an expectation of privacy in public.

And that's the problem, because if there isn't an expectation of privacy, and we record everything that's "in public", we land in a dystopic hellscape.

The problem is really that "privacy" vs. "public" isn't a binary choice. Yes, I expect people to see me in public if they happen to walk by. That's quite different from every movement being recorded and made searchable. Most privacy laws don't really account for that being possible.