always have anarchy as their end goal and consequently must refrain from committing to any particular method of achieving it. In Spain, syndicalism had grown significantly during the 1880s but the first anarchist related organisations didn't flourish. In 1910 however, the Confederación Nacional del Trabajo (National Confederation of Labour or CNT) was founded and gradually became entwined with anarchism. The CNT was affiliated with the International Workers' Association, a federation of anarcho-syndicalist trade unions founded in 1922. The success of the CNT stimulated the spread of anarcho-syndicalism in Latin America. The Federación Obrera Regional Argentina (Argentine Regional Workers' Federation) reached a quarter of a million members, surpassing social democratic unions. By the early 20th century, revolutionary syndicalism had spread across the world, from Latin America to Eastern Europe and Asia, with most of its activity then taking place outside of Western Europe. Propaganda of the deed The use of revolutionary political violence, known as propaganda of the deed, was employed by a small but influential part of the anarchist movement over a roughly four decade period, beginning in the 1880s. It was conceived as a form of insurrectionary action used to provoke and inspire the masses to revolution. This was at a time when anarchists were persecuted and revolutionaries were becoming more isolated. The dismemberment of the French socialist movement and, following the suppression of the 1871 Paris Commune, the execution or the exile of many communards to penal colonies favoured individualist political expression and acts. But the prime factor in the rise of propaganda of the deed, as historian Constance Bantman outlines, was the writings of Russian revolutionaries between 1869 and 1891, namely of Mikhail Bakunin and Sergei Nechaev who developed significant insurrectionary strategies. Paul Brousse, a medical doctor and active militant of violent insurrection, popularised the actions of propaganda of the deed. In the United States, Johann Most advocated publicising violent acts of retaliation against counter-revolutionaries because "we preach not only action in and for itself, but also action as propaganda". Russian anarchist-communists employed terrorism and illegal acts in their struggle. Numerous heads of state were assassinated or attacked by members of the anarchist movement. In 1901, the Polish-American anarchist Leon Czolgosz assassinated the president of the United States, William McKinley. Emma Goldman, who was erroneously suspected of being involved, expressed some sympathy for Czolgosz and incurred a great deal of negative publicity. Goldman also supported Alexander Berkman