A Perverse Ideology

Those suckled, immersed and indoctrinated by the gospel of racial prejudice, bigotry and violence act according to their nature in predictable ways. The violence is both institutional and heritable; preserved in City Halls and Confederate flags, instilled by pastors in families and bequeathed by parents to children. How does an enlightened citizenry combat such an evil, facing down generations' worth of perverse ideology?