Charles Milles Manson (born November 12, 1934) is an American criminal who led what became known as the Manson Family, a quasi-commune that arose in California in the late 1960s.:163–4, 313 He was found guilty of conspiracy to commit the Tate/LaBianca murders carried out by members of the group at his instruction. He was convicted of the murders through the joint-responsibility rule, which makes each member of a conspiracy guilty of crimes his fellow conspirators commit in furtherance of the conspiracy's object.
Manson is associated with "Helter Skelter," a term he took from the song "Helter Skelter," written and recorded by The Beatles. Manson misconstrued the lyrics to be about an apocalyptic race war he believed the murders were intended to precipitate. From the beginning of his notoriety, this connection with rock music linked him with a pop culture in which he ultimately became an emblem of insanity, violence and the macabre. The term was later used by Manson prosecutor Vincent Bugliosi as the title of a book he wrote about the Manson murders.
At the time the Family began to form, Manson was an unemployed ex-convict, who had spent half of his life in correctional institutions for a variety of offenses. Before the murders, he was a singer-songwriter on the fringe of the Los Angeles music industry, chiefly through a chance association with Dennis Wilson, founding member and drummer of The Beach Boys. After Manson was charged with the crimes he was later convicted of, recordings of songs written and performed by him were released commercially. Artists, including Guns N' Roses, White Zombie and Marilyn Manson, have covered his songs.