Anxious about a new photocopier, a Xerox service technician opened fire at his office, killing seven co-workers on November 2, 1999.
Byran Koji Uyesugi had been working as a technician for the company in their Hawaii office since 1984.
But the main photocopier he was tasked with fixing was being phased out by the company in favour of a newer model.
Uyesugi feared he could not manage the most sophisticated photocopier and resisted being trained in how to repair it.
He was told firmly the previous day that his training in the new machine would begin tomorrow.
"I decided to give them a reason to fire me," Uyesugi later told a doctor.
Enraged, Uyesugi arrived at work the next day armed with a 9mm pistol.
He greeted some co-workers as usual, then began opening fire.
He fired 28 shots, 2

Nine News World
Crooks and Liars
RadarOnline
Mediaite
She Knows
Psychology Today
The Conversation