My aunt told me back in the day one of my ancestor/relatives would go around with one particular black guy and they would sit down in the restaurants in town to see if anybody tried to refuse them service. Course, they were payin’ customers.
This is one of the almost uncountable reasons it's damn hard to just run a business these days. "Refuse them service", leftist mob attacks. Demand to serve them, as here, leftist mob attacks.