The Supreme Court heard oral arguments in Wal-Mart v. Dukes, a sex discrimination class action against the retail giant, on March 29. At issue in the case is whether a class consisting of a million or more women employed by a single employer nationwide can be certified in a class action alleging systematic gender-based pay and promotion discrimination. Outside the Supreme Court building, activists gathered to show their support for the women who have been harmed by the retail giant's discriminatory practices.