in post civil war america the president and ( van johnson ) and travel to dallas and be assassinate by corrupt official and businessman interested in instal the vice president whom they can blackmail due to incriminate document . a gunman ( guiliano gemma ) convince that his black friend be wrongly accuse of the assassination aim to uncover the truth . tonino valeri direct this fascinating and if flaw film which obviously be an allegory for the kennedy assassination . the film may wrongly present black a slave work on plantation in texas but the film be nonetheless enjoyable and present an interesting interpretation that kennedy death be the result of a coup de tat which many american could not accept at the time . oswald murder be replay here a the black accused of the assassination be murder by the men responsible and on route to fort worth prison . this moment in the film be more melodramatic than oswald death with his various escort shoot down before his over the top death scene . nonetheless this be definitely one of the more interesting and worthwhile spaghetti western . worth a look .