I see this whole situation like these:
Parents (or whoever) buys an M-rated game for 8 year old with no care in the ratings
Kid plays it
Kid gets ideas
Kid shoots someone because some dumbass left a gun on the bed or something like that
Media blames video games for incident
Video game company reminds people of ratings
Media still blames video games
Didn't the same thing happen in Columbine? Media blamed Doom? I recall reading up that the one of the guys were depressed, the other insane? Is that true? I need confirmation.