People queue at a gas station at Petare neighborhood in Caracas on March 9, 2019, the day after after work and classes were suspended due to an over 24-hour massive power outage. - Thousands of Venezuelans are expected to protest once again Saturday as opposition leader Juan Guaido cranks up the pressure on beleaguered President Nicolas Maduro -- in the midst of a sweeping electricity blackout that has crippled the crisis-wracked country. (Photo by Matias DELACROIX / AFP)