Que viva Mexico! is a film project begun in 1930 by the Russian avant-garde director Sergei Eisenstein (1898?1948). It would have been an episodic portrayal of Mexican culture and politics from pre-Conquest civilization to the Mexican revolution. Production was beset by difficulties and was eventually abandoned. Jay Leyda and Zina Voynow call it his "greatest film plan and his greatest personal tragedy".
(Summary from Wikipedia)