Cops operate in a racist manner under color of authority.
Their 'us against them' mentality is protected by a code of silence, and by authorities allowing a 'margin of error' on police violence. The jailhouse informant scandal exposed the DA's complicity with perjury. The media and the politicians are still in damage control mode, trying to contain what cannot be contained. They're focusing almost entirely on the admissions of Officer Perez. But the courts, the DA, the police brass are all part of the problem.