Before María Corina Machado was arrested by Nicolás Maduro’s regime in Venezuela Thursday, her reemergence in public offered a powerful reminder of the opposition campaign she led this past summer. Her supporters handed her rosaries and shouted chants of “liberty” as she climbed to the top of a truck at an anti-Maduro rally and waved the nation’s flag.

María Corina Machado, the driving force of Venezuela’s opposition movement, was arrested by government security forces Thursday as she left a rally in Caracas, a day before President Nicolás Maduro plans to take office for a third term.