It’s worth noting it’s very difficult to prove officer malfeasance if they’ve destroyed the evidence. Make destruction of evidence by jackboots a crime all you want, and cell phone cameras will continue to be destroyed under the jackboots.
Technology is helping. There are apps available to automatically upload photos and videos to the cloud real-time. The last thing on the video will be the cop as he’s smashing the phone.
How to Cop Proof Your Cell Phone
https://www.youtube.com/watch?v=vVCROjpgCB0