Dehumanize "the enemy" (AKA real human beings, with lives and familes), and killing becomes casual. And frequent. Via Antiwar.com:
A new video from LiveLeaks shows an AH64 Apache attack helicopter targeting farmers in the Wardak Province, Afghanistan while they were planting poppy seeds. The pilot cheerfully sings a little tune after firing a Hellfire missile at them.
It’s unclear where the new video came from, but it will draw inevitable comparisons to another video leaked in 2010, which showed Apache helicopters massacring civilians in metro Baghdad.