Harper Lee began writing To Kill a Mockingbird in the mid-1950s. It was published in 1960, just before the peak of the American civil rights movement. Initial critical responses to the novel were mixed. Many critics praised Lee for her sensitive treatment of a child’s awakening to racism and prejudice. Others, however, criticized the novel’s tendency to sermonize. Some reviewers argued that the narrative voice was unconvincing. The novel was nonetheless enormously popular with contemporary audiences. To Kill a Mockingbird flourished in the racially charged environment of the United States in the early 1960s. In its first year it sold about 500,000 copies. A year after the publication of the novel, Lee was awarded a Pulitzer Prize for fiction.