But in regards to the OP the folks are buying from blacks because they are black. Driving long distances not for a certain product but instead to ensure their money is handed off to another black person vs a whitey or someone else.
It's bigotry. If a white man told me he only wants to patronize white shops I'd think he was a major racist tard. When the black folks do it I think the same damn thing no matter how they attempt to pretty up their ultimate intent.