The aim of OB PPS was to stop repressions following in the wake of the revolution, and demonstrate its strength to the Russian government.[5] It organized a series of simultaneous attacks on Russian officials, primarily policemen, in the Russian partition of Poland that occurred on August 15, 1906.[5][6][7]
There were about 100 incidents,[8] with attacks reported in 18,[2] 19[3] or 20[9] cities and towns. Sources vary significantly with regards to the number of fatalities, reporting about 80,[10] 70,[6] or 51,[4] fatalities among Russian officials (primarily policeman) and informants (see Okhrana), and 43[2][3] or 69[4] injured. In Warsaw alone, sources note "over 100 civilian casualties";[11] another notes 50 Russian policemen killed and 100 wounded,[12] Yet another talks of about 200 fatalities.[1] There, an OB PPS group led by Henryk Baron attacked police offices and clashed with a Cossack military unit, which led to a panic in the Russian garrison, suspecting an uprising, and the retreat of some military units from the town. There was also a demonstration at Grzybowski Square.[13] Another large assault took place in Łódź, where a 25-strong OB PPS group under F. Lipiński attacked a police station, and ambushed several patrols.[7]
Those events became among the best known actions of the OB PPS.[14] They were also among the biggest terrorist-like events in the history of OB PPS.[15][23] It also marked the high point of OB PPS activity, which would wind down over the next year or so.[21][24]
^ abGrzegorczyk, Arkadiusz (ed.). "Łódź w ogniu rewolucji 1905 r."Ilustrowana encyklopedia historii Łodzi. Miesięcznik Łódzki "Piotrkowska 104" (Supplement Historyczny). VII/12 (7). URZĄD MIASTA ŁODZI: 196–197. ISSN1731-092X. Retrieved 30 December 2011.