This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Manson and several followers were convicted in 1970 and 1971 for the August 1969 murders of Sharon Tate and four others, and of Leno and Rosemary LaBianca, and Manson remained imprisoned until his death in 2017. The trial fixed in public memory the account of his motive that has circulated ever since, a specific reading of the Helter Skelter teaching and the reasoning that connected it to the killings.
That account, the fullest published version of Manson's stated motive, comes from the prosecutor who needed to establish it in order to convict him, a record built for the purpose of winning a criminal case rather than for a disinterested history of Manson's beliefs. The prosecution's reconstruction of Helter Skelter as Manson's reason for ordering the killings became, through the trial's dominance in public memory, the standard version repeated ever since.
A later independent investigation has argued that this standard record was never as completely tested as its dominance in public memory suggests, a documented dispute over how fully the prosecutor's account of Manson's motive has actually been verified rather than simply accepted. This record states that dispute plainly, as an open disagreement among those who have examined the case rather than as a settled matter.