As if they had been written yesterday, the revolutionary words of Helen Keller speak to the prevalent ills of crushing capitalism and the dehumanization it breeds. “Her Socialist Smile,” writer-director John Gianvito’s experimental biopic of one of the most influential women of the 20th century, revives them for modern examination. While Keller’s voice, hard-fought and from her own chest, bookends this filmic essay, the piece largely consists of text in white lettering over black: long excerpts taken verbatim from speeches, interviews and letters. Narrator Carolyn Forché, with the academic monotone of a prerecorded guide in a museum exhibit, fills in the gaps and contextualizes Keller’s thoughts between the informative slides.