[4] During the Great Depression in ZZZ, a conflict grew between the solidarist group of Tomaszkiewicz and Malinowski and the syndicalists (Jędrzej Moraczewski, J. Szurig, B. Gawlik, G. Zieliński, S. Kapuściński, Stefan Szwedowski).

[5] Although they continued to emphasize the supra-class character of the state and postulated evolutionary changes, they also recognized the class struggle and proclaimed the slogan "take over the social ownership of the workshops".

The "ideological declaration" adopted at the 3rd Congress of the ZZZ in 1937 proclaimed the class struggle, demanded the nationalization and communization of large plants, banks and foreign trade, postulated "people's democracy" (combining strong executive power with civil rights and participation of the popular masses in government).

Congress also passed a resolution in solidarity with the Spanish anarcho-syndicalist CNT and refused to join the Camp of National Unity.

[8] From then, the union was subjected to constant police and judicial repression (censorship interventions, arrests, trials for participation in demonstrations and anti-state public statements).

[10] At the same time, it emphasized its patriotism, proclaiming its concern for the fate of the nation and the state, "building a new system on the Polish basis", and maintaining independence from international powers.