Cinema, short for cinematography, is often used to refer to the industry of films and filmmaking or to the art of filmmaking itself. The contemporary definition of cinema is the art of simulating experiences to communicate ideas, stories, perceptions, feelings, beauty or atmosphere.
Travis Bickle is a lonely and depressed young man a living in Manhattan – he suffers from heavy depression living most of his life alone. He becomes a night time taxi driver in order to cope with his chronic insomnia, working 12-hour shifts nearly every night, carrying passengers around all five boroughs of New York City.
His restless days, meanwhile, are spent in seedy porn theaters. He keeps a diary (excerpts from which are occasionally narrated via voice-over during the film). Bickle is an honorably discharged Marine, and it is implied but never mentioned in the screenplay that he is a Vietnam veteran; he keeps a charred Viet Cong flag in his squalid apartment and has a large scar on his back.