Bloody Wednesday (Poland)

As Krwawa środa ( German: Bloody Wednesday or blood Wednesday) is called in Poland August 15, 1906. On this day, led members of the Combat Organization of the Polish Socialist Party ( Organizacja Bojowa Polskiej Partii Socjalistycznej, OBPPS ) by more attacks on authorities and police forces in the oppressed by Russia Congress Poland. There were about 100 attacks in up to 20 locations. According to different data here came up to 80 people, mostly Russian policemen and informers killed. The operation of the blood Wednesdays is one of the most well-known activities of the OBPPS.

Already in the previous months, the OBPPS had repeatedly organized attacks against the Russian occupiers. In August 1906, these actions reached a climax. On August 15, there were coordinated actions, which were simultaneously attacked first of all police stations in the country. Kazimierz Sosnkowski was involved as a director of the Warsaw section of OBPPS in the actions in Warsaw. But not all officials of the OBPPS support the attacks. That was above all Józef Piłsudski against the actions. Other, more moderate organizations such as the Socjaldemokracja Królestwa Polskiego i Litwy and the General Jewish Workers' Union behaved negatively.

In response, the Russian authorities was affected to a tightening of policy of persecution of independence activists. Arrests and convictions increased, the Russian army attacked harder than before in the workers' districts of Warsaw, Lodz and other cities through. A consequence of the attacks was a pogrom in Siedlce from 8 to 10 September 1906.