A Family Dollar store security guard was fatally shot in Flint, Michigan, on Friday after telling a customer her child had to wear a face mask to enter the store, prosecutors said. An argument began when the security guard, Calvin Munerlyn, 43, told Sharmel Lashe Teague, 45, that customers needed to wear face masks in the store, Genesee County Prosecutor David Leyton said at a Monday news conference. She yelled at him, spit on him and drove off, Leyton said. About 20 minutes later, her car returned to the store and her husband and son, Larry Edward Teague, 44, and...