The government. We need a comprehensive set of media safety laws that prevent publication of these dangerous reports so they won't fall into the wrong hands.
There are centuries worth of Supreme Court rulings on this topic. You should read them before making such suggestions.
So? Shouldn't all options be on the table to solve this problem?
That said, in the end, some may not be worth it.
https://www.scientificamerican.com/article/mass-shootings-ar...:
> The investigators applied a mathematical model and found that shootings that resulted in at least four deaths launched a period of contagion, marked by a heightened likelihood of more bloodshed, lasting an average of 13 days....
> Previous studies have shown that suicide can be similarly contagious. In one recent example, researchers found a correlation between celebrity suicides, like that of Robin Williams, and an increase in suicidal thoughts in an online Reddit suicide watch group for people battling depression.
> “People are susceptible to information about these events, but the mechanism is less clear,” says Andres Gomez-Lievano, a co-author of the mass-shooting study, published in July in PLOS ONE. Where and when the news reports were published could have an effect on incidence, says Dan Romer, director of the Adolescent Communication Institute at the University of Pennsylvania, who was not involved with the study. It is important to note, he says, that “suicides will trigger others, so it makes sense that people who want to commit suicide while killing others could be influenced in the same way.”
Unless you get the causes and triggers under control, the attacks will just happen with whatever tools are available (e.g. guns, bladed weapons, bombs, or fire).