who allegedly masterminded the murders. >> the '70s is a decade of brutal violence on any front and anywhere you look in america. >> at the time of a mass murder, there's a lot of media coverage. usually after a brief period of time the identity of the perpetrator tends to fade from the public's consciousness, but not so with the manson case. >> the biggest publicity case the d.a.'s office had. >> the manson trial begins the 1970s on such an evil, sadistic note. seven innocent people died. steve -- folger, folger coffee. jay se bring. and sharon tate. >> all of you know how beautiful she was. only a few of you know -- >> and you had charles manson