Genjū Sasa (佐々元十, Sasa Genjū) (14 January 1900 – 7 July 1959) was a left-wing Japanese film director and film critic. He was a founding member of the Proletarian Film League of Japan (Prokino), providing inspiration to the movement through his writings and his films.
Source: “Genjū Sasa”, English Wikipedia (CC BY-SA 4.0), excerpt