I think the real question is, are people born evil?
I don't know. But it seems to me that evil breeds evil. Cho was a by-product of who he was, and his surroundings.
IMO, no-one is demon possessed, unless they first allow the demon to possess them. I use the word demon as a descriptive term, explaining his evil behavior.
Either way, for me, the mere fact that "Evil" exists in the world, is an indication that God exists as well. How this all adds up, is quite complicated, and I am not sure if I totally understand it.
But if Cho went through life being abused, and mis-treated, then those parties responsible are partly to blame as well IMO.
It's part of the reason why, I feel like I do not know who will go to hell and heaven. We miss divine appointments all the time.
The people around him seem to know that he was messed up, why wasn't more reaching out done?
It's like that movie with Adam Sandler, and he calls up all the people he abused in his life, and apologizes. The one guy was a mass murdered, and then crossed him off his list.
I used to work in a place where there was this guy who was mentally unstable, and on medication. When he stopped his medication, he usually would be taken away in a atraight jacket.
The other workers would abus this poor guy. I used to treat him nice, and take the extra time to explain things to him. Then I would asy to him, Danny, if you ever loose it, just remember who was nice to you (joking around, but serious too).
In short, I have never been able to make sense of evil, other than, without knowing evil, then we may never know what good is. The two must exist to understand the differences. It's like, how do you know what light is, unless you expereince the dark?
I have always desired to live in the garden.