I have had some public officials yell "you can't record me" (which we can in this state, audio is what I do) ... then they run away crying like little babies to get a cop; who I then record.
Most of the time , I show them the recorder after I get what I want or wanted to record (like a record request)...
But some times its exactly as described here....cops acting like five year olds and then see a recording device and then, and only then, do they calm down...
We don't have to bash cops on this forum, just show evidence of them doing it themselves...