الأسبوع المأساوي
The Argentine Regional Workers' Federation (FORA) was created in 1901. It split in 1915 between the FORA IX (of the Ninth Congress) and the FORA V (of the 5th Congress), the latter supporting an anarcho-syndicalist stance. In January 1919, the FORA notably called for demonstrations after police repression, during the Tragic Week, while it latter organized protests in Patagonia, which led to harsh repression by Hipólito Yrigoyen's administration (the disturbances were known as "Patagonia rebelde").