FBI documents reveal Las Vegas shooter's anger towards casinos.

FBI documents reveal that Stephen Paddock, the gunman who killed 60 people and injured hundreds more in the 2017 Las Vegas mass shooting, was angry at casinos for treating him poorly despite his high-roller status. A fellow gambler told the FBI that casinos had previously offered high rollers like Paddock free cruises, airline flights, penthouse suites, and tours in wine country, but the red carpet treatment had faded in the years leading up to the shooting. The documents offer the strongest indication yet of Paddock's motive, which had previously been inconclusive.