Complex sentence: In 1917, together with anarchist comrades of Barriera di Milano, he takes part in the riots of Turin against the employers and the war; in 1919 he was elected secretary of the Turin section of FIOM.
Split into simpler sentences: In 1917, together with anarchist comrades of Barriera di Milano, he takes part in the riots of Turin against the employers and the war. In 1919 he was elected secretary of the Turin section of FIOM.