Hey,
I personally would look for authorial intention. I haven't personally read The Lieutenant so I can't comment on what this is for the author. So basically this is like an encoded message they are trying to get across. For example, the book that I studied was The White Tiger. Long story short, it's about a guy who lives in the slums, heavily entrenched poverty area (Along with 99% of their population) that is nicknamed the 'Darkness'. There's also the rich area that goes by the 'Light'. The author, Aravind Adiga, covers how the rich exploit the poor to keep in power. Though, his use of a sarcastic, satire tone makes it obvious that the author is trying to critique the Indian government and intends for readers to see how India is putting out a facade. I hope that makes sense, or someone can help me out here lmao. I would highly recommend looking up scholar essays though.