After a video and some announcements, Alexis Rondón, an official of the Ministry of Social Movements and Communes, begins to speak. "Chávez lives," he says. "Make no mistake: our revolution is stronger than ever."

Mr Rondón's rambling remarks over the next 45 minutes belie that claim. Saying Venezuela is faced with an "economic war", he calls on his audience to check food queues for outsiders, who might be profiteers or troublemakers, and to draw up a census of the district to identify opposition activists and government supporters. "We must impose harsh controls," he warns. "This will be a year of struggle".

About this, at least, Mr Rondón is correct. Sixteen years after Hugo Chávez took power in Venezuela, and two years after he died, his "Bolivarian Revolution" faces the gravest threats yet to its survival. The regime is running out of money to import necessities and pay its debts. There are shortages of basic goods, from milk and flour to shampoo and disposable nappies. Queues, often of several hundred people, form each day outside supermarkets. Ten patients of the University Hospital in Caracas died over the Christmas period because of a shortage of heart valves.