An "accidental feminist"?

There was a curious write-up of a curious book in the New York Times Book Review today: The Accidental Feminist: How Elizabeth Taylor Raised Our Consciousness and We Were Too Distracted by Her Beauty to Notice. The reviewer reports that Liz "was a pathbreaker for social progress and women’s rights — albeit ... an unwitting one." Her stepdaughter said that, while she could detect a “thread of feminism” in some of the movies, she “doubted Taylor had been conscious of it.”

So this is a puzzling thought for me, and I'd be interested in hearing what you all think of it: can feminism be "accidental"? Or do you see it (definitionally, or in actuality) as a conscious, deliberate choice?