You are not arrested for &quot;having an opinion&quot; but if you call for violence, deny the holocaust or endorse genocide. Those are not opinions.<p>Nobody moves the definition every day and it has nothing to do with encryption nor can those laws ever used against encryption by definition as they all include doing something <i>in public</i>.<p>Probably everybody who knows the German society will know whether something is &quot;just an opinion&quot; or violates one of those laws just be looking at most statements. It&#x27;s one of those &quot;I know when I see it&quot; definitions that is shared among Germans. That being said courts have created very narrow and clear precedent on those laws.