In spring the Left Group acted against SAJ policy of founding new trade unions to sectors controlled by the social democrats who had left the central organization. Meanwhile, the communist strengthened their positions in the SAJ and three prominent socialist leaders, Wälläri (Kuljetustyöläisten liitto), Nurminen (Rakennustyöläisten liitto) and Nestori Ahonen (Puuteollisuustyöväen liitto), were purged. Nurminen resigned from the SAJ executive committee. Kusti Kulo, who was in charge of the SAJ education work, was expelled in June. Still, the Left Group tried to work with the communists. It was suggested that the left, including social democrats, should unite against the far-right Lapua Movement which was terrorizing the organized workers. The SKP did not agree.Jorma Virtanen: Suomen ammattijärjestö poliittisen työväenliikkeen eri suuntausten toimintakenttänä 1928–1930. Series F: 1 (Department of Contemporary History, University of Turku 1983), p. 29–30 / ISSN 0359-0593
