The past week saw daily reports of looting in supermarkets and raids on food trucks. The country's opposition coalition called for yesterday's march after a man was killed and 60 were arrested amid the looting of several grocery stores in an industrial town.
There have been 56 episodes of looting and 76 looting attempts in the first half of 2015, according to the nonprofit Venezuelan Observatory of Social Conflict.
President Nicolas Maduro has called these episodes part of a plot to weaken the country's 16-year-old revolution, and has accused the United States of helping orchestrate them.
Government statistics show nutrition continuing to improve, and officials have rolled out a campaign to reduce the country's 40 per cent obesity rate by half.
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While several sought-after items are almost never seen in supermarkets, the shelves are still mostly filled with other goods like rice, beans, cheese, cereal, and a wide variety of produce.
And more than two-thirds of adults remain overweight here, according to the World Health Organisation, almost as many as in the United States.
Opposition coalition spokesman Jesus Torrealba said turnout was small yesterday because most people are spending their weekends waiting in food lines these days.
Some blame the violence on the discontinuation of an unpopular rationing system at government-run stores. These stores, which generally are better stocked than private markets, had been controlling the length of lines by limiting the days Venezuelans could shop based on their government identification numbers.
"We're scared to go into the streets. We're scared to go out and look for food. The crime here is killing us," he said.