Mr. Ledezma was accused by President Nicolás Maduro of plotting with the United States to overthrow him. The State Department issued a statement saying, “Venezuela’s problems cannot be solved by criminalizing dissent.” Credit Carlos Garcia Rawlins/Reuters CARACAS, Venezuela — A new political crisis convulsed Venezuela on Friday over the arrest of the Caracas mayor, one of the country’s top opposition figures, accused by President Nicolás Maduro of abetting what he called an American plot to overthrow the government. Supporters of the mayor, Antonio Ledezma, quickly mobilized protests over his arrest — which they called a kidnapping — which was carried out without warning Thursday night. Human Rights Watch and other advocacy groups demanded Mr. Ledezma’s release, and hundreds of demonstrators gathered in a Caracas plaza to protest. But Mr. Maduro, whose […]