Recording the police is NOT a crime.
From Universal Hub:
A Boston lawyer suing the city and police officers who arrested him for using his cell phone to record a drug arrest on the Common won a victory today when a federal appeals court said the officers could not claim “qualified immunity” because they were performing their job when they arrested him under a state law that bars audio recordings without the consent of both parties.
This will be an interesting case to watch. Police have used some creative charges to stop citizen journalists from recording their behavior and thus holding them accountable for their interactions with the public. The current trend points toward these citizen recordings being legal as long as the citizen stays far enough away as to not be impeding the arrest or investigation. Read the opinion here: http://www.ca1.uscourts.gov/pdf.opinions/10-1764P-01A.pdf