1. Man with the Movie Camera 1929

A man travels around a city with a camera slung over his shoulder, documenting urban life with dazzling invention. IMDb

2. Battleship Potemkin 1925

A dramatized account of a great Russian naval mutiny and a resulting street demonstration which brought on a police massacre. source IMDb

3, October (Ten Days that Shook the World) 1928

In documentary style, events in Petrograd are re-enacted from the end of the monarchy in February of… (142 mins.) source IMDb