The existence of the cameras is not the problem. It's how we use the output of them. Vandalising cameras without putting in place (legislative) checks around the use of surveillance devices is short sighted Luddism - so not a valid response

That's like saying "Guns don't kill people, people kill people." even though death by speeding bullet is more prevalent where guns are legal. Guns and cameras should be used only where a credible strategical benefit exists. Right now, they're often part of a scare tactic and thus oppresses the people confronted by them. One has to ask whether their output is relevant at all before questioning the usage of said output.

So I think you are suggesting imposing a ban on cameras like here in UK bans guns. That is one approach and maybe effective however I feel that there are public good to be derived from surveillance tech, that if the govt has cameras to enable those benefits we still need to manage that and the difficulties of enforcing such a ban for civilian usesuggest to me that mitigating the existence of cameras through open access is simplest approach

I wasn't even suggesting guns should be banned everywhere (although they should), let alone cameras. Open access doesn't mitigate the problem, it'd merely replaces one problem with another. Similarly, publicising requests for footage could be detrimental to law enforcement agencies who are trying to help protect fellow citizens.

Since crime will always exist and criminals will always one-up law enforcement, it's in our best interests to always use the least possible countermeasures. Time will tell when we've reached 1984, society seems to drift closer and closer — albeit, ever so slowly.