'My success in Hell is assured': Manifesto shows Oregon mass shooter's racist Satanic ideology

Investigators in Douglas County, Oregon have released the "rambling" six-page manifesto left by Chris Harper-Mercer, a 26-year-old who killed nine people at Umpqua Community College in 2015.

According to The Oregonian, the letter depicts a that, as recently as 2016, the county's sheriff denied.

"The letter's contents run contrary to public statements made by Douglas County Sheriff John Hanlin, who as recently as 2016 said the manifesto didn't include religious or racial statements," the report continues.

Harper-Mercer, who shot and killed himself after exchanging fire with police following his attack on the college, wrote that he "doesn't hate blacks," but hated black men specifically. Harper-Mercer, who was himself of mixed-race, reportedly spent much of the manifesto railing against black men, and argued that they should be castrated. He also claimed that women were not attracted to him, but rather to "thug blacks."

He also claimed to be a "Satanist" and an occult practitioner who expressed a belief that "human life means nothing."

"I have been forced to align myself with demonic forces. What was once an involuntary relationship has now become an alignment, a service. I now serve the demonic Heirarchy(sic). When I die will become one of them. A demon. And I will return to kill again and again," Harper-Mercer wrote.

"What was it that was supposed to happen, what great event was it that was supposed to make me realize how much there was going for me," his manifesto continued. "But for people like me there is another world, a darker world that welcomes us. For people like us this all that's left. My success in Hell is assured."

Harper-Mercer killed nine people who attended or were employed by Umpqua Community College: Lucero Alcaraz, Treven Taylor Anspach, Rebecka Ann Carnes, Quinn Glen Cooper, Kim Saltmarsh Dietz, Lucas Eibel, Jason Dale Johnson, Lawrence Levine and Sarena Dawn Moore.