but he's correct you have zero expectation of privacy out in public, I as a private citizen can legally follow you around with a camera and film anything and everything you do in public, its 100% legal and your consent is not required for any reason. As for Camera's, I see no issue with these camera's, it still requires a Warrant which means probable cause must be provided, it's no different than getting a company's security camera footage, now as far as a city mounting camera's themselves to record everything that's a little more uncomfortable and should still require a warrant to use, but that would require a court case on it.