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 put us through this last year." Klebold shouted "All jocks stand up!" When nobody stood up, Harris said to "get the guys in white hats." One of them said "Anybody with a white hat on is dead". Wearing a white baseball cap at Columbine was a tradition among sports team members. Several students tried to hide their white hats. Noticing police evacuating students outside the school, Klebold said "Pigs are here" and Harris said: "Let's go kill some cops." They shot out the windows in the direction of the police. Officers returned fire, and the gunmen retreated from the windows;