The wild popularity of comedic duo Terence Hill and Bud Spencer from 1970's "They Call Me Trinity" transformed the traditionally violent Spaghetti Western genre into G-rated slapstick parodies.
With the demise of the once gritty, hard-hitting, and often excessive, violence from Italian westerns, filmmakers found a new home for gunfights and double-crossing, this time in a more contemporary setting: the present day urban spheres of industrialized cities like Milan, Genoa, and Rome.