LOS ANGELES, Dec 25: Twenty years after Quentin Tarantino unveiled his first film “Reservoir Dogs,” the director has turned his eye to America’s slavery history, spinning a blood-filled retribution tale in his trademark style for “Django Unchained.” Tarantino, 49, has become synonymous with violence and dark humor, taking on the Nazis in “Inglourious Basterds” and mobsters in “Pulp Fiction.” (agencies)