*On the top left corner of the diagram, there is a box stating: "One year ago". In the middle of the diagram, and the main focus, "a big fire".*
Answer: The social commentary that Mark Twain does in "The £1,000,000 Bank-Note" (1893) is that money does not corrupt men, but it actually reveals their true self and the kind of men they are.
Google it, there's a lot of historical facts upon that