Gallery for Russian Art and Design (GRAD), London, until 29 March
Cinema was in its infancy when revolution in Russia toppled the old order in 1917. From the beginning photography and film were seen as important educators by the new workers' government.
Lenin argued that finance for film should be divided between the popular and a cinema that widened the base of the revolution. For millions film brought the outside world into the their lives. Film could only be "real".