I think BLM and ACAB is intended to drive a population of people that's prone to manipulation further left. That's why the movements are named so provocatively. They were created not to inspire any real change, but manipulate a population of emotionally susceptible people. Particularly the young generations. Its a perfect divider because if someone is not a supporter of this movement they are accused of being racist. There is no faster way of dispelling someone's opinions in 2021 than to call them a racist.

Nobody with the slightest bit of self respect would be racist in 2021, but it's almost just as devastating to not support the BLM movement and subsequently appear racist. If someone doesn't support BLM, the supporters of that group can dispel the opposing opinions as racist, and that's dangerously ignorant.