COINTELPRO (Counter Intelligence Program) was a covert FBI initiative aimed at infiltrating and undermining domestic political groups, especially those on the left. Tom O’Neill connects COINTELPRO to the broader efforts to discredit the counterculture and Black Power movements of the 1960s. He suggests that law enforcement’s framing of the Manson Family as emblematic of countercultural dangers may have been part of a larger agenda to delegitimize leftist movements.

The Golden Penetrators were a group of Hollywood insiders, including figures like Terry Melcher and Dennis Wilson, who had personal and professional ties to Charles Manson before the murders. O’Neill investigates the group’s hedonistic lifestyle and explores how their interactions with Manson may have contributed to the events leading up to the Tate-LaBianca murders. The term Golden Penetrators reflects the blurred lines between Hollywood excess and the dark, violent undercurrent that Manson represented.

The Haight-Ashbury Free Medical Clinic was a prominent medical facility in San Francisco’s countercultural hub during the 1960s, founded by Dr. David Smith. In Chaos, O’Neill explores how Manson and his followers, particularly the women, frequently visited the clinic. O’Neill suggests that the clinic’s open-door policy and its research into drug use (including LSD) may have played a role in Manson’s influence over his Family.