CHESAPEAKE, Va. (AP) — Police say a shooter opened fire in a Walmart in Virginia, leaving six people dead. It was the country’s second high-profile mass killing in a handful of days. The assailant is also dead. A shopper said the store in Chesapeake was busy Tuesday night with people stocking up ahead of the Thanksgiving holiday. Officer Leo Kosinski couldn’t say how the shooter died but said that he didn’t believe police fired shots. It was not clear who the shooter was or what their motive might be. A database that tracks every mass killing in America going back to 2006 shows this year has been especially bad.