(AP) — In this Tuesday, June 21, 2011 file photo, demonstrators hold signs outside the Supreme Court in Washington to protest the court's Wal-Mart sex discrimination class action lawsuit decision.
For years, the world's largest retailer has tried to repair a reputation that's been damaged by decades of criticism and legal troubles. In April 2012, allegations that Wal-Mart paid bribes to officials in Mexico threaten to derail Wal-Mart's attempts to improve its image. (AP Photo/Evan Vucci)
