Leslie Van Houten was 19 when she helped Manson and other followers kill Leno LaBianca, a grocery executive in Los Angeles, and his wife, Rosemary, in 1969
Lorenzo "Fat Cat" Nichols was linked, but never charged, to the slaying of NYPD Officer Eddie Byrne, 22, who was executed while sitting in his patrol car in 1988
Ninety-one California inmates died while they were awaiting compassionate release between January 2015 and April 2021, according to the nonprofit advocacy group FAMM