I don't think those kids are/were true racists though. They're the product of an environment that empowers boys to think they are men, and teaches them to act how they perceive men should act. Ie taking advantage of women, abusing alcohol, and acting racist because they're middle to upper class white kids (for the most part)

Good one! I'm not saying what they did is excusable. It's not. But do you really think they'd be singing that song, or any song, about n***ers if they hadn't been taught it? I don't know them so I can't say for sure, but I doubt it.
Again, what they said is terrible and they should be punished to the fullest extent. But the institution they were a part of clearly played a role in forming their thoughts/actions.