On March 29th the United States Supreme Court will hear oral arguments in the case of Dukes vs. Walmart. Walmart is of course well known. Dukes is Betty Dukes, a 61-year-old Walmart greeter from California who says she has been discriminated against on the basis of her gender. And Dukes is not alone. Millions of other women who have worked at Walmart, most as hourly wage earners, may very well become part of Dukes’ class action lawsuit.