I'd like to see a breakdown by cameras by government, companies and homes. I think all those are not equal. Its one thing to have a camera looking at your porch for package thieves but a camera in government hands can be used for a lot more.

Is this actually a useful metric? Cities should be compared to cities.

Also, that link doesn’t seem to say whether cameras are owned by the state. Presumably surveillance operated by the government is more totalitarian than various private businesses.