Cor blimey no idea but will tell you what went through my head. First I thought killing leading to corruption (wealth etc) leading to sin (idol worship, more killing, etc). Then by the end I could only think of kharma (what goes around comes around).
At the back of my head I could see the people trying to give the idol what they thought it wanted, a misunderstanding and then the wrath of the idol.
Make of that what you will.