'Sweatshop' claim sparks lawsuit: Cintas is suing the guru of America's socially responsible investment community

Tim Smith, a director of ethical investment firm Walden Asset Management, is being sued by Cintas, the largest US provider of uniform clothing, over remarks he made introducing a shareholder resolution in October. [also refers to Ford, General Motors, Viacom, Tyco, Coca-Cola, American Electric Power, Cinergy]