Sunday brunch was painfully disrupted for diners nationwide when protesters occupied upscale restaurants and read off the names of black victims of police violence. The #BlackBrunch demonstrators targeted eateries that serve predominantly affluent, white clientele and staged sit-ins in New York City, San Francisco, Oakland, Baltimore, and other cities across the country. As discomforted brunchers lifted mugs of pour-over coffee to their lips, protesters recited the names of black people killed by the police like Eric Garner, Trayvon Martin and Michael Brown. Although some protesters encountered hostility from restaurant managers, most of them witnessed supportive gestures from the diners. Activists...