>But you would probably never come across the boring stat that less than 1 in 500,000 police encounters ever register on the "ACAB" radar.

This is hardly a revelation. There are levels of bastardy in between "angelic philosopher-saint and paladin of justice" and "demonic hellspawn stomping babies for resisting arrest". The cop who just hands out false tickets to meet quota is just as ACAB as the one who finally loses his temper and shoots someone without true cause, but one gets to hide it better. Intuitively, I suspect that the cumulative actions of the low-level ACAB behaviors add more misery and injustice to the world than all the wrongful deaths and incarceration combined.