Along related lines, Ontario recently banned Ottawa's use of photo-radar cameras for automated speed enforcement. The use of automatic speed cameras was widely perceived as a cash grab rather than a legitimate method of improving traffic safety. (Meanwhile, though, there are still plenty of red-light cameras in operation--and though the revenues raised from those traffic tickets are supposed to go toward improving road safety, none of the cash raised has actually gone into that fund.)
If you're out in public, you have no expectation of privacy. And I've never heard of anyone leveling a serious complaint about casually appearing on a traffic cam or a storefront security camera. But these systems aren't interconnected and aren't tracking your movements; you're just a casual walk-on on a videotape or hard drive. There's a balance that needs to be struck somewhere between "no expectation of privacy" and "surveillance state."
