It’s heartening to see, in the wake of the Cambridge Analytica revelations, growing skepticism about how Facebook handles data and data privacy. But we should take this opportunity to ask the bigger, harder questions, too — questions about discrimination and division, and whether we want to live in a society where our consumer data profile determines our reality. In the spring of 2016, a Facebook executive gave a presentation about the success of Facebook’s then-new "ethnic affinity" advertising categories.