Dee in 2008, at the 39th NAACP images awards, where she was honored. She is also the recipient of a Grammy, an Emmy, a Screen Actors Guild Award and a National Medal of Arts, among many other honors. She was 91. Mark Mainz / Getty Images

Dee was nominated for a best supporting actress Academy Award for her performance of Denzel Washington’s character’s mother in “American Gangster.” Everett Collection

In “Do the Right Thing” 1989, Spike Lee’s exploration of racial tension in Brooklyn, Dee, right, provides the voice of wisdom and reason as Mother Sister. Mary Evans Picture Library / Everett

Among the many causes Dee championed were the Black Panthers. Here the actress speaks at a 1969 press conference during the trial of the Panther 21, the leadership of the east coast membership of the Black Panther Party, who were on trial for conspiracy and other charges for which they were all ultimately acquitted. David Fenton / Getty Images

In 1961, Dee was cast opposite Sidney Poitier in “Raisin in the Sun,” a role she first played on the stage two years before. The play explores the tensions in an ordinary black family against the backdrop of racial discrimination at the dawn of the civil rights era. Copyright © Everett Collection / Everett Collection

In “The Jackie Robinson Story,” 1951, Dee played the wife of the heroic baseball player, who played himself in the film. FPG / Getty Images

Dee married the actor Ossie Davis, who she met while performing in the short-lived Broadway show Jeb, above, which opened in 1946. They appeared in eleven plays and five films together and campaigned off-stage for civil rights and other social causes. MoviePix / Getty Images

Celebrated actress Ruby Dee, seen here in a publicity photo taken in the 1950s, won fame through groundbreaking roles and an off-screen dedication to social justice. Everett Collection

Ruby Dee, an acclaimed actress and civil rights activist whose versatile career spanned stage, radio, television and film, has died at age 91, according to her daughter.

Nora Davis Day told The Associated Press on Thursday that her mother died at home at New Rochelle, New York, on Wednesday night.

Dee had a long career in theater and film, receiving an Oscar nomination for best supporting actress at the age of 83 for her role in the 2007 film "American Gangster.” She also won an Emmy and was nominated for several other awards.

Speaking to The Associated Press in 2001, Dee said: "I think you mustn't tell your body, you mustn't tell your soul, ‘I’m going to retire.’ You may be changing your life emphasis, but there's still things that you have in mind to do that now seems the right time to do. I really don't believe in retiring as long as you can breathe."

The celebrated actress was surrounded by family and friends at the time of her death, her daughter said.

Throughout her career she frequently acted alongside her husband, Ossie Davis, whom she met on Broadway in the mid-1940s. Their partnership rivaled the achievements of other celebrated performing couples, such as Hume Cronyn and Jessica Tandy.

But they were more than a performing couple. They were also activists who fought for civil rights, particularly for blacks.

"We used the arts as part of our struggle," she said at an appearance in Jackson, Mississippi, in 2006. "Ossie said he knew he had to conduct himself differently with skill and thought."

In 1998, the pair celebrated their 50th wedding anniversary and an even longer association in show business with the publication of a dual autobiography, "With Ossie and Ruby: In This Life Together."

Davis died in 2005. At his funeral, his widow sat near his coffin as former President Bill Clinton led an array of famous mourners, including Harry Belafonte and Spike Lee.

Davis and Dee met when she auditioned for the Broadway play "Jeb," starring Davis (both were cast in it). In December 1948, on a day off from rehearsals from another play, "The Smile of the World," they took a bus to New Jersey to get married. They were already so close that "it felt almost like an appointment we finally got around to keeping," Dee wrote in "In This Life Together."

They shared billing in 11 stage productions and five movies during long parallel careers. Dee's fifth film, "No Way Out," with Sidney Poitier in 1950, was her husband's first. Along with film, stage and television, their richly honored careers extended to a radio show, "The Ossie Davis and Ruby Dee Story Hour," that featured a mix of black themes. Davis directed one of their joint film appearances, "Countdown at Kusini" (1976).

The couple's push for social justice was lifelong: In 1999, they were arrested while protesting the shooting death of Amadou Diallo, an unarmed African immigrant, by New York City police.

They were friends with baseball star Jackie Robinson and his wife, Rachel — Dee played her, opposite Robinson himself, in the 1950 movie "The Jackie Robinson Story" — and with the Rev. Martin Luther King Jr. and Malcolm X. Dee and Davis served as masters of ceremonies for the historic 1963 March on Washington, and she spoke at the funerals for both King and Malcolm X.

Among her best-known films was "A Raisin in the Sun," in 1961, from the classic play that explored racial discrimination and black frustration. On television, she was a leading cast member on soap operas in the 1950s and '60s, a rare sight for a black actress at that time.

As she aged, her career did not ebb. Dee was the voice of wisdom and reason as Mother Sister in Spike Lee's 1989 film "Do the Right Thing," alongside her husband. She won an Emmy as supporting actress in a miniseries or special for 1990's "Decoration Day."

She won a National Medal of the Arts in 1995 and a Lifetime Achievement Award from the Screen Actors Guild in 2000. In 2004, she and Davis received Kennedy Center Honors. Another honor came in 2007, after Davis' death, when the recording of their memoir won a Grammy for best spoken word album, a category that includes audiobooks.

Born Ruby Ann Wallace in Cleveland to parents who soon split, Dee moved to Harlem as an infant with a brother and two sisters, living with relatives and neighbors. She graduated from highly competitive Hunter High School in 1939 and enrolled at Hunter College. "I wanted to be an actor but the chances for success did not look promising," she wrote in their joint autobiography.

But in 1940 she got a part in a Harlem production of a new play, "On Strivers Row," which she later called "one giant step" to becoming a person and a performer.

In 1965, she became the first black woman to play lead roles at the American Shakespeare Festival. She won an Obie Award for the title role in Athol Fugard's "Boesman and Lena" and a Drama Desk Award for her role in "Wedding Band."

Most recently, Dee performed her one-woman stage show, "My One Good Nerve: A Visit With Ruby Dee," in theaters across the country. The show was a compilation of some of the short stories, humor and poetry in her book of the same title.

She is survived by three children, Nora, Hasna and Guy, and seven grandchildren.

The Associated Press