She famously took to the stage when the actor won his Academy Award for The Godfather in 1973.
The activist had been battling breast cancer.
The Academy of Motion Pictures announced the news Monday.
Sacheen Littlefeather.Frazer Harrison/Getty Images
She was also reprimanded on camera by the evening’s cohost Michael Caine and attendees such as Clint Eastwood.
“He very regretfully cannot accept this very generous award,” Littlefeather said during the event.
Littlefeather’s motivation and identity were later debated by stars like John Wayne.
In September, the Academyapologized to Littlefeatherin person during a public presentation held at the Academy Museum.
She adopted her name while participating in the 1970 occupation of Alcatraz Island.
She later joined the Screen Actors Guild, where she became acquainted with Brando andThe Godfatherdirector Francis Ford Coppola.
Littlefeather shared the events leading up to that moment withVarietylast month.
“Marlon had called them in advance and asked them to watch the Academy Awards, which they did.
The 2021 documentarySacheen Breaking the Silenceexplored her life and activism.
