Las Vegas' Route 91 Harvest country music festival was tragically cut short Sunday night when a gunman opened fire on the crowd, killing 58 people and wounding nearly 500 others. The attack took place during the headlining set by Jason Aldean, who later called the events "beyond horrific."
The incident was only the most recent in a long line of attacks and mass murders perpetrated at live events and theaters, from the disorder and death at a Northern California rock festival to the recent bombing of a British pop concert.
