When I lived in South Africa, the staple food of the people in the townships (the shanty towns homing those living in poverty) was mealie pap. Basically, just corn mashed up and boiled in water with some salt if it was available. Meat was extremely, extremely rare.
But apart from what the poor eat, what I think is disgusting is the fact that 3rd world countries, particularly the Latin American states, export grain to the United States and elsewhere to feed the livestock industry. The starving people of those states are being overlooked by both governments, Latin American and Northern American, for an unhealthy, unsustainable diet which requires the starving to starve - destroying both human and non-human life.