Face mask warning ends in murder in Michigan

(WEYI/NBC News)  Michigan authorities are searching for two men accused of murdering a Family Dollar security guard after he warned a woman that face masks are required inside the store.Several witnesses say Calvin James Munerlyn, who was working as a security guard at the Family Dollar in Flint, and a female got into a verbal altercation after Munerlyn told the female's daughter she needed to wear a mask inside the store.The prosecutor says the woman spit on Munerlyn and was forced to leav