CUMANÁ, Venezuela — With delivery trucks under constant attack, the nation’s food is now transported under armed guard. Soldiers stand watch over bakeries. The police fire rubber bullets at desperate mobs storming grocery stores, pharmacies and butcher shops. A 4-year-old girl was shot to death as street gangs fought over food.

Venezuela is convulsing from hunger.

Hundreds of people here in the city of Cumaná, home to one of the region’s independence heroes, marched on a supermarket in recent days, screaming for food. They forced open a large metal gate and poured inside. They snatched water, flour, cornmeal, salt, sugar, potatoes, anything they could find, leaving behind only broken freezers and overturned shelves.

And they showed that even in a country with the largest oil reserves in the world, it is possible for people to riot because there is not enough food.

In the last two weeks alone, more than 50 food riots, protests and mass looting have erupted around the country. Scores of businesses have been stripped bare or destroyed. At least five people have been killed.