Do you see no difference between recording the location of every cell phone and taking video from the air of city streets?
I don't find speeding cameras detestable, if indeed they are activated by staggered induction/magnetic sensors and are not simply 24/7 video recording cameras.
We need to consider the difference between ephemeral / archived (and searchable), not just public / private.
We're talking about a single organization having access to 24-hour video of every street in the city, with the ability to select and rewind every car and every person. It's fundamentally more powerful than public video snippets.