How is it useful for you, or anyone, to know the name and face of a mass killer? It's not like you can predict how likely it is someone will murder you based on

How is it useful for you, or anyone, to know the name and face of a mass killer? It's not like you can predict how likely it is someone will murder you based on how they look or what they're called. The point is that media is making mass killers into celebrities and that encourages more sick (read depressed, lonely) people to perform acts like this.