CARACAS, Venezuela—Day after day since early this month, on streets clouded with tear gas, William Colmenares and other young Venezuelans raise their voices against President Nicolás Maduro's government. They accuse him of acting like a dictator and wrecking the country's economy.
Mr. Maduro calls the protesters fascists, part of a plot by the U.S. government to derail Socialism in this oil-rich country, and his government has arrested dozens.
Students and opposition leaders say that National Guard troops have fired rubber bullets and clubbed some protesters. State security agents, along with motorcycle...