[5] In July 1874, together with Rafael Farga Pellicer, he joined the Federal Commission of the FRE-AIT when it moved from Madrid to Barcelona, at a time when it was operating clandestinely, as the International was banned in January 1874 after the triumph of Manuel Pavía's coup d'état that put an end to the First Spanish Republic.
From that moment on, García Viñas, according to Josep Termes, “because of the free time he had as he was not a worker [he was a doctor][6] and not being tied to a rigorous working day, ended up becoming the axis of the organization and drafting all, or almost all, the projects, reports or resolutions of these years.
[7] In 1876 he translated the Swiss anarchist James Guillaume's pamphlets Ideas on Social Organization and Historical Sketches, of which he wrote the foreword, signing as "D. G. Omblaga, doctor of science.
[9] At the Verviers Congress of the Anarchist International held in August 1877 he attempted to rebuild the Bakuninist "Alliance" together with Peter Kropotkin and James Guillaume, but the project failed.
"[11] When at the end of 1880 the debate on the return to legality of the FRE-AIT was raised in view of the prospect that the new liberal government of Práxedes Mateo Sagasta would recognize the right of association, García Viñas defended illegalism and, as his position was defeated, he left the organization and direction of La Revista Social.