whit -
You can't say anything about the moral standing of "society" and have it mean something other than the collective moral standing of the individual members. If Society promotes evil behavior, then there must be something evil in the collective morality of the members.
To put it another way, picture a closed system with nothing inside of it. Now, one at a time, you introduce babies that have had no prior interaction either inside or outside of the system. At some point as they grow and interact, "evil" behavior starts to emerge. How was it introduced to the system? There's nothing in there apart from individual humans. The corruption that exists must have existed in the individual members in order to be present in the collective group.
Unless, ya know, you wanna look for something outside that makes people evil
[cue evil Satan laugh]
-sm