As a global business, Memphis-based FedEx Corp. (NYSE: FDX) often has to contend with a wide variety of cultures and special interests. This past week, a protest over the company's shipments of shark fins broke out in China. A handful of protestors from the organization WildAid carrying signs calling for an ban on shark fin sales — and wearing shark costumes — joined together outside the company's depot in the Kwun Tong district of Hong Kong. “Logistics companies like FedEx provide critical…