This situation is an extreme manifestation of the consequences of the very same thing I'm talking about.
it's a choice
1) many people come from those conditions you talk about and have enough basic decency to not participate in something like this or more importantly proactively seek it out
2) many people don't come from those conditions they are either just garbage, learn it from their
peers to fit in, sociopaths/sociopathic, or psycopaths/psychopathic
people don't suddenly grow out of it they either mature to realize they were garbage and stop, get bored of it, or get humbled by an experience otherwise the person would continue to be a demon
people who follow along shows you how evil the world is and why you will eventually realize you are on your own because under the right conditions anyone will throw you under the bus
why people would want to surround themselves with people who proactively are looking for ways to destroy your life (sociopaths and psychopaths) I really don't know but that's the society we live in
garbage people, followers who will throw you under the bus to fit in, and demons love adolescence and youth because that's the perfect time to let out their evil
"I was just a kid" or "I was young" when the person is just a demon
many people know what they're doing and have an excuse waiting