Josip Broz Tito
He was appointed secretary of the Zagreb branch of the Metal Workers' Union
Zagreb, Croatia
In March 1927, he wrote an article complaining about the exploitation of workers in the factory, and after speaking up for a worker he was promptly sacked. Identified by the CPY as worthy of promotion, he was appointed secretary of the Zagreb branch of the Metal Workers' Union, and soon after of the whole Croatian branch of the union.