Well, when you're witnessing multiple instances of officers willingly and enthusiastically assaulting defenseless and innocent citizens/journalists on the street every day, you're past the point of "bias" correction.

These instances are not the result of some nebulous ingrained tendency to view others as less than themselves, they're the result of a coordinated and deliberate attempt to assert power.

Your assertion that removing police would create a "vacuum" assumes incorrectly that there is currently a sense of "order" established. This is not the case, as there is no set of behaviors black men in particular can adopt which will not result in their extrajudicial execution. Police are more accurately viewed as an occupying militia and I see no reason to believe it would just as soon be replaced by something similar.