Earlier quoted context omitted.
I don't understand why a police cruiser can sit in a public space (or even a private one) and write down licence plates and descriptions of passers-by with pen and paper, or record everything around them with dashcams and bodycams for later use, but when it comes to cameras on a pole this would require a warrant. Going back through police officers' notes or cruiser dash cam videos and tracking a car's movements by it…
Because the ability to scale up a bunch of officers sitting around writing down literally everything they see is limited in comparison. It can only be so invasive and “always-on” everywhere. Throwing up a few dozen flock cameras costs a fraction of that and scales incredibly quickly.
But often the inverse argument is used in respect of private corporations. Obviously it would be unreasonable to expect Google to vet every ad and YouTube video uploaded tot heir platform, and make responsible editorial decisions about which ads and content to show to children. Surely to allow them to scale arbitrarily large we must make sure not to overly burden them with regulations.