Duck, You Sucker (1971)

aka A Fistful of Dynamite.  Sergio Leone directed tale of the 1913 Mexican Revolution finds an Irish terrorist (James Coburn) with an obsession with dynamite teaming up with a Mexican peasant turned revolutionary (Rod Steiger) in an explosive tale of power and politics. Features a great Ennio Morricone score and commentary from some film historian. Out of print DVD.