Urban fiction is a literary genre set, as the name implies, in a city lanscape; however, the genre is as much defined by the race and culture of its characters as the urban setting. The tone for urban fiction is usually dark, focusing on the underside rofanity (all of George Carlin's seven dirty words and urban variations thereof), sex and violence are usually explicit, with the writer not shying away from or watering-down the material. In this respect, urban fiction shares some common threads with dystopian or survivalist fiction. Often statements derogatory to white people (or at least what is perceived as the dominant white culture and power structure) are made, usually by the characters. However, in the second wave of urban fiction, some variations of this model have been seen.