Police are, in the aggregate, racist. They are more violent towards people of color. The marches are led by POC, include large numbers of POC, and are all about calling the police out for their own biases and illegal behavior.
This is simply a fact. It's not only intuitively true based on astute observation of current affairs, but the data trends towards supporting it.
https://www.citylab.com/equity/2019/08/police-officer-shooti...