“When the media highlights the magnitude of attacks as ‘the largest’ or as having the most victims, it is imbuing the perpetrator with what might be perceived as a status or power that others want to emulate,” psychologist Peter Langman, an expert on school shootings, told me. By dwelling on and comparing death tolls, he says, news media “run the risk of essentially creating a national ranking, which might lead subsequent perpetrators to kill even more people so that they can be ‘number one’ and go down in history.”
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This problem is prevalent in another dataset I built in 2015 to research the “Columbine effect”—scores of cases in which mass shooters and would-be attackers have been influenced in various ways by the 1999 high school massacre.
More than a dozen cases since then involved perpetrators specifically with ambitions to surpass Columbine’s body count.