Cordobazo

Military ruler Juan Carlos Ongania instituted a wave of repression against leftists and unions by the DIPA secret police, cut union rights and rolled back labor gains. Simultaneous with the Rosariazo, columns of workers and students occupy Cordoba, with strikes and factory occupations erupting alongside demonstrations by students. The police are overwhelmed, and the army intervenes and fires into the crowd in order to regain control of the city; the army shut down the independent unions, raided their offices and arrested their leaders.
That same day, an unknown guerrilla commando kills Augusto Vandor, leader of the metallurgical workers, who is denounced as a paradigm of the alliance between the Peronist union bureaucracy and the military establishment.