When you mention redlining and legal policies that is systemic racism. That is perhaps the worst of racism because it's built into the law. That kind of racism may or may not be the result of racists but what I do know is that for various reasons (power grabs etc) people look to create scapegoats in society. So I do not know 100% whether people who back for example "for profit prisons" are racist or if they just own shares in these industries. It is not as easy to determine the motivations of people when economic incentives are promoting certain creations of certain kinds of laws.