This gets us to the central problem of today’s surveillance state. No one running the cameras wants to be observed. One reason that city officials object to releasing Flock data, for example, must that they themselves are among the recorded. The cameras are on them too; they too can be tracked. Everything means everything for these everywhere cameras.
I am from the US. Don’t know about anywhere else. AFAIK there is no law granting exemption to public officials. And any law that trys to restrict filming or dissemination of public information gets shot down because of the first amendment of the US constitution. That is a special law.