We've had police show up on our sets many times. Never have we been shut down. (Cops hate paperwork)
The only three reasons a cop would shut down a production are:
1. Underage persons are present.
2. Drugs
3. No permit
And the permit one only applies to cities like Malibu that strickly enforce that crap.
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I'd rather be ignorant than stupid.
Ignorance implies a lack of knowledge which is easily correctable through education.
Stupidity implies an inability to learn.
Therefore; ignorance is temporary, stupidity is forever!