There was a vegan diner/coffee shop in my town, food was okay, nothing special.
One time there was a gnat on my girlfriend's celery though. Never ate there again because it contained meat/food made from byproducts of animals.
Maybe that's why it was shut down. Maybe that's why there was a terrorist act against them: a big box of spicy chicken wings from BW3's poured all over their front door.