This, from Japan, is utterly surreal:

“There has never been a gang war with drones available to drop bombs into the offices of rivals,” a detective with the Hyogo Police Department told VICE News on condition of anonymity. “In recent years, there have been successfully made 3D guns that are capable of doing lethal damage. So even if a gang has no weapons on hand, they just need the right equipment. Print, kill, melt the gun. Those new guns will be hard to trace…. Escalation could be very fast and very bloody.”

Not the awesome side of technological progress, I think.