"I'm Watching You Film My Officer, Which Is Interfering! - Excellent little documentary about cops in Tucson violating rights and singling out people recording them.
No one hates our rights more than law enforcement.
If you don't know, it is our RIGHT to record police from public, from close enough to see and hear. Several states have tried setting a minimum distance in law, Arizona tried 8 feet. It was ruled unconstitutional by a federal court because there's no reason for it but to infringe on our right. Shining a light in the camera, playing copyrighted music etc are all examples of attempted prior restraint and is a crime.
If you're law enforcement and you have a problem with the people recording you on the job, then you ARE a domestic enemy.
There are a lot of cops who should have been put on their asses or in prison long ago.