I don't have a solution, but making all police communications public in real-time only puts innocent people at risk.
Police officers, therefore, are generally complicit, and actively rather than merely passively so, in perpetuating and advancing the culture of unaccountability that fosters abuse and enables those officers who are direct abusers.
Most officers may not be direct abusers but that's not the only way to actively participate in promoting abuse.
Got a source? I've worked with/dated/am related to quite a few LEOs in various parts of the country. This has never been true in my experiences. That's hardly a "rule".