Sacheen Littlefeather, the Native American civil rights activist best known for declining Marlon Brando's best actor Oscar for "The Godfather" in 1973, has died at the age of 75, the Academy of Motion Picture Arts and Sciences and her family announced late Sunday. She died peacefully at home in Marin County, Calif., surrounded by loved ones, the academy said. She was suffering from breast cancer, her family said. In a tweet with word of her death, the academy quoted her as saying, "When I am gone, always be reminded that whenever you stand for truth, you will be keeping my voice and the voices of our nations and our people alive. I remain Sacheen Littlefeather. Thank you." Sacheen Littlefeather, Native American civil rights activist who famously declined Marlon Brando’s 1973 Best Actor Academy Award, dies at 75. pic.twitter.com/OlpsoItlCw At the October 1973 Academy Awards ceremony Littlefeather, wearing buckskin dress and moccasins, became the first Native American woman to take the