Throughout the pandemic, the tactic has also been deployed to attack bars and restaurants that enforced mask-wearing for safety. Spamming review portals with negative ratings is not a new phenomenon. Soon, his bar started receiving multiple one-star reviews on Yelp and Google Reviews from accounts as far away as Europe. It’s a name and shame campaign.” It wasn’t just the emails. “We started receiving hate mail through the Google portal,” Knapp says, estimating he’d received about a “few dozen” emails: “I’ve been called a Nazi and a communist in the same sentence. The Instagram post showing the sign (above) quickly went viral among European anti-vaxxers on Reddit.