This story is disturbing on a number of levels. I'd be very interested in understanding what the law says about the general subject of making recordings of pol

This story is disturbing on a number of levels. I'd be very interested in understanding what the law says about the general subject of making recordings of police activity in general. Could a lawyer on HN explain the the current legal framework surrounding making video recordings of police activity? What are our rights? Can they confiscate equipment? Can they threaten and bully witnesses as reported in this article? Can they go as far as entering your home and, effectively, imprison you? If one were to make such a recording, what are the five words you can say to a police officer that --assuming he is not a criminal with a badge-- would cause him to back off, leave you alone and not attempt to confiscate your property?