In December 1930 the great Soviet film-maker, Sergei Eistenstein, arrived in Mexico.
He had already made three extraordinary films, Strike (1924), Battleship Potemkin (1925) and October (1927). All three were revolutionary in terms of subject matter — the masses in collective struggle. They were also revolutionary in form. With his experimental use of editing (montage), Eisenstein built on and radically transformed the way in which film worked.