A Cop Stops You at a Festival: The ?Know Your Rights? Infographic ? Showbams
Good advice in other than "festival" circumstances.
IMO, nothing dumber than arguing with a cop or being rude to a cop.
I would advise both police and civilians to always have other witnesses present, for the sake of mutual safety.
Also it helps if you
* don't wear a hoodie or gang tattooes
* don't carry pot, or other questionable substances, not even candy and soda for making Lean.
If this becomes a nationalized incident, your image will be picked apart based on what you were caught carrying.
* don't have a criminal record, don't be an illegal/undocumented worker
* don't have attention deficit, mental illness, or other condition that makes you vulnerable to misunderstood reactions that can be seen as noncompliance, resistance or criminal signs.
* know the police personally or have other common contacts or common references,
especially if you have worked with police on community outreach before so people know you are not a problem
The best advantage is having a connection with the community, knowing people in advance and having positive relations.
If you give off negative vibes of any sort, this can be misread and misunderstood as criminal if confronted by an officer.