Columbine High School massacre "Christianity is YOUR Columbine". In a self-made video recording sent to the news media by Seung-Hui Cho prior to his committing the Virginia Tech shootings, he referred to the Columbine massacre as an apparent motivation. In the recording, he wore a backwards baseball cap and referred to Harris and Klebold as "martyrs." Adam Lanza, the perpetrator of the Sandy Hook Elementary School shooting had "an obsession with mass murders, in particular the April 1999 shootings at Columbine High School in Colorado." The perpetrator of the Emsdetten school shooting praised Harris in his diary. In November 2007, Pekka-Eric Auvinen imitated Columbine
Columbine High School massacre the materials suggested behavior patterns consistent with a "malignant narcissism ... pathological narcissistic personality disorder with borderline and antisocial features, along with some paranoid traits, and unconstrained aggression". The link between bullying and school violence has attracted increasing attention since the massacre. Both of the shooters were classified as gifted children who had allegedly been victims of bullying for four years. Early stories following the shootings charged that school administrators and teachers at Columbine had long condoned bullying. Critics said this could have contributed to triggering the perpetrators' extreme violence. Klebold said on the Basement Tapes, "You've been giving us