In a call to action, the sheriff of a Louisiana parish urged parents to “take control” after a 15-year-old died from a stabbing in a fight between teens inside a Walmart store over the weekend. Four girls, ages 14, 13 and 12, are now charged in the incident, according to the Calcasieu Parish Sheriff’s Office. “It’s really heartbreaking when we have to come in and pick up the pieces, because so many families were damaged after this,” Sheriff Tony Mancuso said at a Sunday news conference. “It’s just a cycle that we have to stop, and we’re just fed up...