Consider a few quick facts:

Four corporations, led by Walmart, control more than half of grocery sales. Walmart alone gets more than one quarter of every grocery dollar spent in the U.S.
Three companies — Monsanto, DuPont and Syngenta — own 47 percent of the world‘s seeds. And they own 65 percent of the global proprietary maize market.
Nearly every major commodity — wheat, corn, soy — is controlled by just four corporations.
Just four corporations control more than 80 percent of all our meat supply.
According to USDA statistics, America loses more than 17,000 farmers a year — one every half an hour.