Madero is shown being shot by Pascal at Madero's desk in his office in the Presidential Palace in Mexico City. In reality, Madero and his Vice President were shot by soldiers of Gen. Victoriano Huerta, who had overthrown Madero and was having him transported to a prison outside Mexico City. The car they were in stopped behind a building outside the prison, and Madero and his vice president were taken outside the cars and shot.
The film strongly implies that Pancho Villa took Mexico City by himself, and then made himself president. In fact, the city was taken in a three-pronged attack by Villa's forces and those of two other revolutionary generals, Emiliano Zapata and Venustiano Carranza. After the city was taken and Huerta fled, the three generals ruled together, although Zapata soon went home and Carranza eventually forced Villa out of power, defeating his forces and ruling Mexico by himself.