My thoughts are there are hardly any good police officers.
I think if any officer saw another doing anything illegal or would get them in trouble, 99% of the time they wouldn’t report them. The Blue Wall is real.
There has been substantial evidence of police hiding or deliberately not reporting misconduct from their colleagues, often because of fear of reprisals -- which absolutely is part of the system being objectively wrong.
I'm willing trust an officer as a person, but not as a part of the system.