On March 20, 2012, Trey Eric Sesler, a 22-year-old YouTuber, shot and killed his parents and brother in Waller, Texas. He had planned a school shooting at Waller Junior High School after murdering his family, but while sitting in the parking lot…changed his mind. Investigators say that Sesler was heavily inspired by the Columbine High School massacre, as well as other infamous killers.