First of May Group

The First of May Group was an anarchist anti-Franco resistance movement which took militant action against the Spanish dictator's regime. They were formed in 1966 by exiles dissatisfied with what they perceived as the quietism of other opposition groups. Actions attributed to the group include the occupation of the Vatican Embassy in 1966 and the machine-gunning of the Spanish embassy in London. A man claiming to speak for the group stated that they were behind the March 1974 bombing of the Spanish Cultural Institute in Dublin.

The group, though secret, was thought to have links to the CNT, the FIJL and the Anarchist Black Cross.