Nonsense. Cameras will be always used to benefit only the police as long as they control them: it's easy to cherry-pick what to record and, later on, what to release. It's easy to take off a camera altogether. You need 3rd parties (e.g. bystanders) to be able to record what's happening and stream it it safe storage in real time.

It's sad that you're being downvoted for saying this, because it's true. As long as police are the only ones legally or practically empowered to film these encounters, they will be the ones empowered to control the narrative.

The right of citizens to film police encounters without harassment or threats is imperative.