They discussed the practical and theoretical tenets of anarchist socialism, particularly "propaganda of the deed", whose question became associated with the group in 1876 and was debated for two decades. Adherents such as Malatesta and the Italian anarchists quickly adopted the tactic, while Guillaume was hesitant. Up until this time, the anarchist philosophy had flourished in small artisan communities, such as the watchmakers in Jura, and propaganda of the deed was intended to bond anarchist and workers' groups, as had been done in Spain and Italy. Upset by Kropotkin's advances, Guillaume left Jura in 1878. An 1880 congress of the Jura Federation, in La Chaux-de-Fonds, adopted "anarchist communism" as its doctrine, as did many anarchists outside Spain, since the latter's anarchism was more dependent on trade unions. Schwitzguébel and his adherents in Jura were reticent at the adoption of communism over collectivism.