It’s a liberal area AND the place had fewer than 50 seats. Who cares if liberals eat together - in a different time they would have stopped blacks from entering ... and an earlier time Jews would have been denied.
“Liberals” seem to be under the impression that ‘choice of victim’ is the key to being ‘moral’. They are wrong - as all the haters before them were wrong.
I’ve never heard of a time in the history of USA when Jews were routinely denied entry to a restaurant or other establishment. They were welcomed here as refugees in both world wars. Yes, if you mean prejudice, that existed.