I've been following the story here and there, and the first I heard about video games being blamed was this thread right here, so maybe some people are just following the wrong news sources? (e.g. anything that cites Jack Thompson as an expert in anything probably isn't worth visiting).
I can only imagine what it must be like for the families of those killed on Friday, and my heart, for what it's worth, goes out to them. Nobody should have to go through anything like that, but unfortunately some of us always do. Life, as they say, isn't fair.