By William Neuman The New York Times November 23, 2011 Rink Dickinson, president of Equal Exchange, a pioneer importer of fair trade coffee, chocolate, tea and bananas. Mr. Dickinson called the move by Fair Trade USA a "betrayal." A tempest in a coffee pot is bubbling in the world of “fair trade,” the socially responsible food movement that seeks to lift farmers in the developing world out of poverty by offering them a premium for crops like coffee, cocoa and bananas. And the fight will soon reach your local Starbucks, Wal-Mart and Whole Foods. Fair Trade USA, the movement’s leading advocate in the United States, angered critics by saying it would cut its ties at year’s end with the main international fair trade group and make far-reaching changes in the sorts of products that get its seal of approval. The changes include giving the fair trade designation to coffee from large plantations, which were previously barred in favor of small farms. Th...