This inquiry leads students through an investigation of Isabel Wilkerson’s 2020 book, Caste: The Origins of our Discontents. The central thesis of her work is that American racism is built on a caste system. She builds her argument by highlighting Nazis Germany and the Indian caste system as she defines the central pillars of caste. Ultimately, she argues America exhibits each of the pillars by noting historical and modern examples of each. This argument caused a stir when the book was released and elicited conversation and disagreement. This inquiry asks students to engage with the conversations around this book by arguing why it “hit a nerve” as they learn to engage and evaluate secondary sources.