Breivik's "Manifesto" references a 2003 essay by scholar John H. McWhorter, titled “How Hip-Hop Holds Blacks Back.”
Although Breivik does not give credit to McWhorter in the document, the Philadelphia City Paper noted that a portion of the “Manifesto” actually references Schoolly D.'s 1985 classic “PSK (What Does It Mean).”
The song is recognized by Hip-Hop historians as being the first “Gangsta rap” record.
"People who use Schoolly’s music to justify their own actions are saying that I thought that I was telling them to be a gang banger or worse," Schoolly D. told The City Paper."That’s horrible, that they are taking MY lyrics — not really listening and not really enjoying it — and just being sick. And sick and weird as they are, they are, they not really brave."
Schoolly claimed that those quoting his lyrics or referencing them to justify heinous acts such as the Oslo shooting/bombing, which took the lives of 77 people, were simply looking to justify their own immoral behavior.
"In the song 'PSK' the last thing I say is “I put the pistol down because I got a educated mind” nobody quotes that," Schooolly D. continued. "When they hear that, the people actually listening, then they say “oh now I get it….the people who gravitate toward one part of my lyrics or song aren’t really listening."
In the "Manifesto," Breivik says that media companies should censor the negative and instructive images that hip-hop music allegedly perpetuates.
"As for the fate of the hiphop industry; banning it altogether is not the optimal solution as it would cause overwhelming short term outcry and it would eliminate positive aspects as well…certain positive aspects of the hiphop movement should be allowed to survive such as break dance and positive genres of the music as long as it positively influences the self confidence of European youths and only if it can be re-defined as a European tradition and not portrayed as a ghetto/ethnic/multiculturalist lifestyle."
In the "Manifesto," Breivik said that he learned to train himself for the massacre by playing “Call of Duty: Modern Warfare 2.”