As a free citizen, I would welcome body cams on cops - knowing that it actually protects me from my encounters with them as much as them from charges and suspensions resulting from legit use of force.
It's a much bigger violation of personal freedoms to get threatened, beaten, robbed, framed or shot by a crooked cop operating in the secrecy of nobody but other crooked "brothers" witnessing his actions. If his/her actions are on video it could also shut down some of thee moronic false flag claims of police brutality every time some violent banger of color gets his criminal ass lit up.
If the video files have a strict protocol of their use being limited to the behavior of the officers and the things they are directly responding to, it seems well worth doing. It's the out of context, end of the incident videos that can stir shit up and make a criminal look like a victim. Fight fire with fire, I say.