Socialist Action (Poland)
Socialist Action (Polish: Akcja Socjalistyczna) was an anti-fascist organisation during the Second Polish Republic which acted as the paramilitary wing of the Polish Socialist Party (PPS). == Background == The PPS had a tradition of organised militancy going back to workers' self-defense units that were first formed in 1904.
Source: Wikipedia — Socialist Action (Poland) (CC BY-SA 4.0)