The philosophy behind ACAB is that the American police system and its proponents abuse the system and work to keep each other from facing consequences. “Good cops” may enter the force, but they don’t last long, because those who don’t play along and look the other way eventually get ousted, whereas those they tattled on get rehired at a different station.
The idea isn’t that literally all cops ever will always be bastards. It’s that (under the current system) all cops are bastards.
You have a fundamental misunderstanding.
The philosophy behind ACAB is that the American police system and its proponents abuse the system and work to keep each other from facing consequences. “Good cops” may enter the force, but they don’t last long, because those who don’t play along and look the other way eventually get ousted, whereas those they tattled on get rehired at a different station.
The idea isn’t that literally all cops ever will always be bastards. It’s that (under the current system) all cops are bastards.