The courts have been clear, recording police, flipping them off, and talking ARE NOT INTERFERENCE/OBSTRUCTION.
The only speech that can be interference/obstruction is threats, or lying (He went that way!), our free speech can NOT be criminalized as interference/obstruction according to the US Supreme Court. Furthermore, we have the right to approach and record police action from close enough to see and hear. Arizona's law of just 8 feet minimum distance was ruled unconstitutional because it's just that, unconstitutional. Cops are assuming every citizen is a violent criminal and infringing their rights for the sake of cowardice, while there are certainly situations where those recording are absolutely not a danger, interfering or obstructing in any way, or even need to be within 8 feet.
It's Land of the Free and Home of the Brave, not the land of tyranny and home of cowardice.
Either respect and uphold our rights or leave the job cowards.