And even when its public record, there is a large consensus that some of it should not be published to a larger audience. There was a now old incident where pirate bay had a torrent of a public record covering the investigation of death of several children. It was one of the few torrents that if I recall right, the pirate bay voluntarily took down. A lot of people commented that police should have used more discretion in what they put in the public record.
Body cams has the same issue. It is good that they exist. There is however cases when the record should be kept secret. The default should always be transparency, with exceptions when there is good reason to keep it away from the public. As a obvious example, the body cam recording from a police arriving to a rape scene with the undressed victim should not be public record.