Dumping refers to the practice of exporting products at a price lower than the normal price (e.g. the price in the domestic market of the exporter, or the price in the market of a third country), in order to increase market share and drive out competition. It is a highly controversial practice as it tends to support farmers in rich countries at the expense of producers and consumers in low-income countries. Although it is legal under World Trade Organisation rules, it has been heavily criticised, particularly by the food sovereignty movement, for undermining domestic production and food security in the global South, and marginalising smallholder farmers in the global economy.