Urban fiction, also known as street lit, is a literary genre set, as the name implies, in a city landscape; 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. Profanity (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. In the second wave of urban fiction, some variations of this model have been seen.