What is Mary Shelley communicating?

In referring to the Ruins of Empires, Shelley subtly reminds the reader of the ways in which humanity itself is monstrous: people commit unspeakable violence against one another, and exploit those who do not possess the trivial virtues of money and noble birth. The creature's horror at these revelations reveals his essential goodness; it also serves to echo the terrified disgust with which the villagers met his own deformity. Once again, Shelley forces us to reconsider the question of monstrousness ­ here, it seems that it is the neglectful and selfish Frankenstein, and not his suffering creation, who truly deserves to be called a monster.