Monsanto (MON): This mega-agribusiness has made sure that genetically modified organisms are permeating our food supply. If you haven't noticed, it's because there are no labeling requirements in the U.S. for GMOs. A major percentage of U.S. corn, soy, rice, cotton, canola and sugar beets are genetically modified thanks to Monsanto, and not only do these ingredients end up in a heck of a lot of our food, but they're also used to feed factory farmed animals as well. Monsanto's rough treatment of small farmers is infamous. Many farmers who choose not to use Monsanto's products have been sued by the company for patent infringement when its seeds and pollen have contaminated their crops.