Every country has organizations and activist lawyers that help people with governmental and private overreach and power abuse. Is just a matter of finding them out. Germany has a very strong base of professionals that view social benefit as the main reason for their activity, so I’m pretty sure there are plenty of places where one could get help if required.

Yeah, but if the indeed come and try to sue you, a competent lawyer will force the case dismissal and they will end up having to review whatever law they pass.