In the past two years, many food companies — including candy-makers — have decided to label their products as non-GMO. Because practically all sugar beets in the U.S. are genetically modified, those food products are now using sugar derived from sugar cane. There is no genetically modified sugar cane. Tetra Images/Getty Images hide caption

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As Big Candy Ditches GMOs, Sugar Beet Farmers Hit A Sour Patch

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Supporters of American Crystal Sugar Co. workers, who have been locked out of the company's sugar beet processing plants since 2011, rally in the North Dakota Capitol. Dale Wetzel/AP hide caption

toggle caption Dale Wetzel/AP