lol @ irony
cry @ everything else
EDIT: You know what? I'm not going to blame this on video games or guns, I'm going to blame a mal-formed relationship between the parent's and the kid. I don't know what might have caused this relationship, but:
A) People don't get that angry about a video game under normal circumstances. Even teenagers don't get angry enough to ****ing shoot both of their parents because they took a game he's been playing for a few hours.
B) The game was taken away from him in September, yet he shot his parents a month later. Even if he was angry enough to shoot his parents when it was taken away from him, that anger wouldn't have lasted a month unless something else was happening.
C) He was recovering from a staph infection. Being home-ridden for a long time, tensions build up, on top of the stress of being sick itself. But judging by the fact that he was able to sneak out and by the game, the only thing affecting him was just starting being able to go back outside. My guess is that his parents wanted him to take it easy more, but Daniel felt well enough to go out and do stuff, that disagreement causing bad friction.