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
Bowling for Columbine The film's title refers to the story that Eric Harris and Dylan Klebold—the two students responsible for the Columbine High School massacre—attended a school bowling class at 6:00 AM on the day they committed the attacks at school, which started at 11:17 AM. Later investigations showed that this was based on mistaken recollections, and Glenn Moore of the Golden Police Department concluded that they were absent from school on the day of the attack. Moore incorporates the concept of bowling into the film in other ways as well. For example, the Michigan Militia use bowling pins for their target practice.