How does the author use symbolism in the novel, The White Tiger?

Early in the narrative, after Balram has revealed that he killed his former master, Mr. Ashok, he refers to a wanted poster with his face on it that was put up all over India. He first uses the words and images on the poster to describe, in narration, who he is and what he believes; later, in the immediate aftermath of Ashok's death, he convinces someone looking at the poster that he is not, in fact, the man the poster depicts. Thus the poster represents both the truths and the lies that Balram tells other people, perhaps even the reader, about himself.