D.W. Griffith: A Corner in Wheat (1909)

http://www.brevestoriadelcinema.org/storia-del-cinema/02-il-cinema-delle-origini/02-5-nascita-e-sviluppo-della-cinematografia-americana/
A Corner in Wheat is a 1909 American short silent film which tells of a greedy tycoon who tries to corner the world market on wheat, destroying the lives of the people who can no longer afford to buy bread. It was directed by D. W. Griffith and adapted by Griffith and Frank E. Woods from a novel and a short story by Frank Norris, titled The Pit and A Deal in Wheat.
Intercutting (cross-cutting) between still tableaux of the poor in the bread line and the lavish, active parties of the wealthy speculator somewhat anticipates the collision montage which became a hallmark of the politically charged Soviet cinema a decade or so later.
In 1994, A Corner in Wheat was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant".
https://en.wikipedia.org/wiki/A_Corner_in_Wheat