The only television station that regularly broadcast voices critical of the government was sold last year, and the new owners have softened its news coverage. Last week, President Nicolás Maduro banned a foreign cable news channel after it showed images of a young protester shot to death here. Opposition legislators have been barred from debates and stripped of committee posts in the National Assembly. And when an opposition leader called for a protest this week, Mr. Maduro scheduled his own march to start at the same spot and dispatched the National Guard to try to block protesters from rallying elsewhere. Venezuela is being convulsed by the biggest protests since the country’s longtime president, the charismatic Hugo Chávez, died nearly a […]