Audio recordings of various school or university shooters. Note: Elliot Rodger isn’t necessarily a school/university shooter, as his attack was only on the campus, and three of his victims were stabbed to death, not shot. Still fits into the theme, in my opinion.
In chronological order: Kip Kinkel (1998) - Dylan Klebold (†1999) - Eric Harris (†1999) - Seung-hui Cho (†2007) - Pekka-Eric Auvinen (†2007) - TJ Lane (2012) - Adam Lanza (†2012) - Elliot Rodger (†2014) - Dylann Roof (2015)
Pekka-Eric Auvinen was the perpetrator of the Jokela school shooting in Finland and displayed a series of alarming behaviors months prior to the incident. His teachers noted that he was a “militant radical”, interested in both far-right and far-left movements. They expressed their concern over him, but nothing was done by authorities. Similarly, in 2007, popular Youtuber TheAmazingAtheist contacted police after he found one of Auvinen’s many accounts, which detailed his plans to carry out a massacre and showed him posing with guns. This was just a few months before the shooting, and again, authorities did nothing. It’s likely that 9 lives could have been saved that day, but the police chose to ignore a very serious threat on two separate occasions.
Above is school shooter Pekka-Eric Auvinen, who killed 8 people at a high school in southern Finland. He attempted to commit suicide instantly by shooting himself in the head, but failed. He died in a hospital hours later from the gunshot wound to the head. The shooting occurred on November 7th, 2007. Auvinen was named afterward the Youtube Killer, because he had uploaded videos to the site, one of which displaying him shooting his gun.