Read this book.
Perhaps I need to write more? For those who do not know, Errico Malatesta (1853-1932) was one of anarchism’s greatest activists and thinkers for over 60 years. He joined the First International in 1871 and became an anarchist after meeting Bakunin in 1872. He spent most of his life in exile from Italy, helping to build unions in Argentina in the late 1880s and taking an active part during the two Red Years after the war when Italy was on the verge of revolution (the authorities saw the threat and imprisoned him and other leading anarchists before a jury dismissed all charges). Playing a key role in numerous debates within the movement – on using elections, participation in the labour movement, the nature of social revolution, syndicalism and Platformism (to name just a few), he saw the rise and failure of the Second International, then the Third before spending the last years of his life under house arrest in Mussolini’s Italy.