Last week, Erica Walker, then manager of an apartment complex in Memphis, Tennessee (she was subsequently fired), became the latest white person to gain notoriety for calling police on a black person—in this case because the man wore socks into the complex’s pool, in apparent violation of a property rule requiring proper swimming attire. The incident closely followed a similar one at a private pool in North Carolina and reports that a white woman in a Cleveland suburb had called the cops on a 12-year-old black boy who had accidentally crossed into her yard while moving her neighbor’s lawn.