The police (in the US) have a long history of protecting their own, and punishing anybody who does speak up, even in the face of what would otherwise be compelling evidence of illegal behavior.
ACAB might be a bit hyperbolic, but the sentiment (that policing in the US is fundamentally broken) isn’t off base.
Fair. ACAB is kind of the asshole's version of "Defund the Police" (which is also problematic, as the "pro-police" side jumps straight to "defund and disband all policing", which also isn't what most people mean). Nuance doesn't work very well on Twitter (or online in general).
ACAB might be a bit hyperbolic, but the sentiment (that policing in the US is fundamentally broken) isn’t off base.