Abstract
150 years after the birth of the “Antiauthoritarian International”, the salient events of
its first development are retraced, from the Rimini Conference to the Saint-Imier International
Congress. Opposition to the authoritarian imprint that Marx tried to impose on the Antiauthoritarian
International provoked the reaction of numerous national federations that will break all
the relationships they had with the General Council of London. The activity of the Italian Federation
was experiencing a growth among workers in the countryside and in the cities, that led
to a fierce repression, which will lead to the outlawing of the organization. Forced to clandestine
activity, the Italian Committee for the Social Revolution was formed, with a series of appeals and
Manifestos to the Italian people, attempts and insurrections without success. This experience will
led to a revision of the methods