Okay, the guy's an idiot. But the little psychos like him give gamers a bad reputation. What the people will see in this article is "Playstation" and "kill parents". And, of course, the "logical conclusion" (if you're an idiot) is that "games provoke violence". And, possibly, "gamers are idiots".
The fact is that the little moron was violent from the start, and would've tried to kill them for some other reason even if he didn't have a console.