Not really.
An antihero in the literary sense has either to stand for something bigger than herself, or act as a sort of "force" through which nature/fate/god/history/justice make sits impact in the narrative world.
Spree killers don't stand for anyone but themselves, even duos like E&D or Andrew Golden and Mitchell Johnson.
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Life is like a tram - you need to know when to get off.
"Bullet Time" - a school shooting film from Poland