Dirty Harry "Rawhide", was responsible for creating Callahan's distinctive old-fashioned brown and yellow checked jacket to emphasize his strong values in pursuing crime. Filming for "Dirty Harry" began in April 1971 and involved some risky stunts, with much footage shot at night and filming the city of San Francisco aerially, a technique for which the film series is renowned. Eastwood performed the stunt in which he jumps onto the roof of the hijacked school bus from a bridge, without a stunt double. His face is clearly visible throughout the shot. Eastwood also directed the suicide-jumper scene. The line, "My, that's a big
Dirty Harry (character) the present system, despite its flaws, to the vigilante alternative. In his fight against criminals, however, including the fellow officers on the death squad, Callahan is merciless and shows no hesitation or remorse at killing them. In "Dirty Harry", several explanations are suggested for his nickname. When his partner Chico Gonzalez asks of its origins, Frank DiGiorgio says that "that's one thing about our Harry; [he] doesn't play any favorites. Harry hates everybody: limeys, micks, hebes, fat dagos, niggers, honkies, chinks- you name it," even though DiGiorgio was joking; Callahan is not a racist. After being called to talk down