Anarcho-communist ideas replaced collectivist anarchism as the main anarchist tendency in Europe, except in Spain. Here the major issue was not the question of communism (although for Ricardo Mella this played a part), but a question of the modification of strategy and tactics implied by communist anarchism. At this time (the 1880s), the anarcho-communists stressed local cells of anarchist militants, generally opposed trade unionism as were characterized by a degree of anti-organisation. Unsurprisingly, such a change in strategy and tactics came in for a lot of discussion from the Spanish collectivists who strongly supported working class organisation and struggle.