Because capitalism is inherently racist, police departments everywhere serve at the behest of corporate sponsored governments — that is, in protective service of white supremacist private corporate power. As an institution police departments operate as state sanctioned gangs employed to uphold the violent, racist hierarchy of capitalism and, whenever possible, to further the monopoly of power where all violence from/by those higher on the hierarchy upon those lower can be legalized and normalized. Any deviation from this narrative, any counterviolence — or even the threat of force — by those lower on the hierarchy upon those higher is met with brutal repression. This is why cops are always present at protests. It is not to “keep the peace.” It is to protect the private property/interests of corporate power, the owners of US government, and to maintain at all times the explicit reminder of America’s power hierarchy, meaning, inevitably, black and brown people’s brutalization above all others. Such will always be the primary function of police no matter who we elect — Democrat or Republican — so long as the cement between private corporate power and government remains un-fractured. Thus we know, all cops may not be racist, but all cops replicate/enforce white supremacist, capitalist oppression.