*WARNING: OPINION ALERT. DO NOT BE ALARMED
This guy, and the others like him, are the end result of the state sponsored blurred lines, everyone wins a prize, it's not your fault, type of upbringing that has taken over this country since Dr. Spock wrote his idiotic book. The results are predictable, identity confusion, inability to cope with failure, unrealistic expectations, emotional instability and, ultimately, violent behavior.
This is the core of the issues we face today, and the reason we see so many people embracing the liberal "I should be taken care of" ideology. When they reach the "real world" and things are not as they have been taught to expect, the mentally weakest among them blow a mental gasket, and take their frustration out on those around them. Because they assume it's not their fault, and the rest of us must be punished.
Even if we were to change the way kids are raised today, we will still face years of increasing violent acts by those that feel entitled to something more than they've earned. In the end, this is what will need to change in order to turn the country around. The real challenge will be getting people to admit they were wrong, in order to begin the process.