Even the stupid things that hurt everyone! That’s the best part. We’ve been so into racism as a country that we shoot ourselves in the foot constantly to spite black people.
There’s plenty of examples, but the one that always comes to mind for me first is public transportation. We led the world for a while there. Buses and trams and all sorts of ways to get around easily. It feels awfully coincidental that we let black people ride wherever they wanted on the bus and all of a sudden public transportation takes a back seat to car infrastructure right after.