Poale Zion
With the threat of pogroms and meeting clandestinely the Warsaw Poale Zion formed a commando unit (bojowka) with around sixty guns. They were used to "expropriate" funds from well to do citizens. In March 1906 the entire Warsaw leadership were amongst the 120 delegates arrested attending the Poale Zion conference in Poltava. Three months later eighteen gunmen raided Warsaw railway station, stealing cash and leaving "a receipt in the name of Warsaw's Poale Zion".