Martin Scorsese's intense film, a hallmark of 1970s filmmaking, graphically depicts the tragic consequences of urban alienation when a New York City taxi driver goes on a murderous rampage against the pitiable denizens inhabiting the city's underbelly. For psychotic, pistol-packing Vietnam vet Travis Bickle (Robert De Niro), New York City seems like a circle of hell. Driving his cab each night through the bleak Manhattan streets, Bickle observes with fanatical loathing the sleazy lowlifes who comprise most of his fares. By day he haunts the porno theaters of 42nd Street, taking his cues from the violent vision of life portrayed in these movies. As badly as Travis wants to connect with the people around him including Betsy (Cybill Shepherd), a lovely blonde campaign worker, and Iris (Jodie Foster), a prepubescent prostitute he tries to save his attempts are thwarted and his pent-up rage grows, turning him into a Mohawk-wearing walking time bomb. Paul Schrader's screenplay is filmed wi;