Here’s an idea...don’t have a mechaism where they can turn off the came
If the cop has access to the camera, it will get turned off somehow. Masking tape over the lens, or some such.
A far better idea, is that each cop is individually responsible for his camera to be in working order and turned on 100% of the time. If video evidence is lost, missing, or just not recorded:
1. Cop is personally liable for 3x legal fees for all persons accused.
2. Cop is fired, no excuses, no recourse.
3. If any civilian is injured, cop is 100% responsible.
4. Cop is personally responsible to pay for lost time of any arrested civilian. Either, 5x the cop's hourly pay for all the hours spent in custody, or 10x the civilian's hourly pay whichever is greater.
Now I am an old white guy, but when I was younger I was harassed by cops many times over my life. I had no recourse. If I had been black, it would have been much worse.