I wish news outlets were more responsible in how they reported these things. People do this because they want to go out in a blaze of attention, they want the spectacle. I don't think journalists can say that on the one hand their reporting has an effect on the world (which of course it does), but then say that how they report things doesn't matter.
They can explain what matters, i.e. how many shooters there were and whether they were motivated by a cause or just illness, but they don't have to show every detail, and allow the killer to find the glory that is sought.