Also gotta think of the theme of the place too. It's billed as an authentic Italian pizza joint owned by Italians with Italians up on the wall. If it was like a regular diner and he only had pics of whites but he also sold shyt like tacos or soul food and still refused to put pics up then I see the grievance. I would still say he is within his right but I wouldn't look at bugging out like a fool in that case.