There were lots of monsters to pick from, and I don't think it mattered which one did the killing. Rarely do monsters stalk the innocent. It happens, but it's very unusual. Most people are killed by friends and relatives. It builds into a grudge.
Years go by and the grudge deepens into hate.
We kill our children with a leather strap. We kill our wives with a slap. We kill ourselves by refusing to admit we were wrong, refusing to cry, refusing to suffer, and refusing to die. They marched into battle so loaded with fear and mysticism that insanity was the only way out. Utter disregard for life.