It’s not so much about hiding information or censorship as it is not actively spreading and victimizing them. You’re taking it to the extreme when you say it would be hidden. I’m not talking about coverups but news outlets always have bias because they choose what’s important to include and what’s not. These situations should be about the victims and preventing it in the future and not about the shooter. Regardless of previous situation it’s inexcusable to do anything close to what they do. The goal should be to stop it before it happens because obviously these people have problems but once they’ve done it at least my sympathy goes out the window.