Dorothy Pitman Hughes, a pioneering Black feminist, child welfare advocate and activist who co-founded Ms. Magazine with Gloria Steinem, formed a powerful speaking partnership with her and appeared with her in one of the most iconic photos of the feminist movement, has died. She was 84.

Hughes died Dec. 1 in Tampa, Florida, at the home of her daughter and son-in-law, said Maurice Sconiers of the Sconiers Funeral Home in Columbus, Georgia. The home said it did not know the cause of death.

Hughes was not as well known as Steinem, but the two forged an important partnership at a time when feminism was viewed as a very white, middle-class movement. Steinem credited Hughes with helping her become comfortable speaking in public.

In one of the most famous photos of the movement, taken in October 1971, the two raised their right arms in the Black Power salute.

Hughes, a pioneering voice in child care, organized the first shelter for battered women in New York City and co-founded the New York City Agency for Child Development.