Police slapping phones/cameras out of someone's hands need to get control of their emotions and bear the "I will catch you slipping up" threat with confident pr

Police slapping phones/cameras out of someone's hands need to get control of their emotions and bear the "I will catch you slipping up" threat with confident professionalism. That said, the criminal-record stereo-blaster was probably lying about 'his uncle' and I don't think you get to 'you have no warrant we're done here' and shut the door on the police responding to a neighbor noise complaint. If they want to give you a talking-to or a ticket (depending on local law), they can. I do believe the guy about his phone being "lost", though (should be easy to corroborate if they have signatures/records of personal items), and we can expect real sanction for the phone-slapper if it's clear which cop did it.