On 15 September the CGT of Rosario declared a strike, and on the morning of the next day the workers marched on the city. Street fighting and repression were widespread throughout the city. Between 100,000 and 250,000 people are estimated to have taken part in the protests, which later came to be known as the Second Rosariazo (or the Proletarian Rosariazo). The workers converged on the seat of the CGT and were joined by students, who had previously gathered at the faculties.