Last month, the Red Hen restaurant in Lexington, Virginia attracted international attention when the owner turned away White House press secretary Sarah Huckabee Sanders and her family. The episode shocked many Americans, especially Donald Trump supporters. But in this era of aggressive ideological mobbing, such episodes have become common—even if most of the victims are not nearly as famous as the press secretary. A hip bar in the Atwater Village neighborhood of Los Angeles has become the latest business caught up in this phenomenon. And unlike the owner of the Red Hen, the operators of The Griffin found themselves accused of bias by critics on both sides of the political spectrum. Last weekend, The Griffin was forced to shut down when a group of social media-mobilized activists swarmed the bar upon hearing news of a meet-up by Trump supporters in ‘MAGA’—Make America Great Again—hats. For days afterward, activists from both ideological camps followed up by filling the web with negative reviews and hateful comments. A visit to the business’s Yelp page shows a banner indicating the …