NEW YORK : Oscar-nominated actress Ruby Dee, who was also known for her activism during the US civil rights movement, has died at the age of 91. The stage, television and film star - a pioneer among America’s black actresses - died Wednesday at her home in New Rochelle, New York, with her family at her side, her agent Michael Livingston told AFP. The diminutive actress - a native of Cleveland, Ohio - worked alongside her late husband Ossie Davis in some of her most memorable roles, in a career that began in the 1940s.