"He was an extraordinary character, charismatic in many ways, no question about it," Lansbury told the U.K.'s Daily Mail newspaper of Manson in 2014.
Films, books, podcasts and more have dramatized the actor's death.
Other true crime dramas have brought real-life tourism, like "Making a Murderer" and "The Act."
Manson didn't actually kill Tate.
Margot Robbie stars as Sharon Tate in the director's new film, "Once Upon a Time in Hollywood."
The director was married to the Manson Family's most famous victim.
There's been much written about Manson and his band of merry murderers, but who was Vincent Bugliosi, the man who brought him down?
"Today, Manson's victims are the ones who should be remembered and mourned on the occasion of his death."
Before Manson coerced his cult members into murder, he was a musician who seduced and preyed on young women. Dianne Lake, whose new memoir recounts her years with him, was one of his victims.
Debra Tate, whose sister Sharon was killed in 1969, says TV shows depicting real murders are distasteful.