Rząśnik (Polish pronunciation: [ˈʐɔ̃ɕɲik]) is a village in the administrative district of Gmina Stary Lubotyń, within Ostrów Mazowiecka County, Masovian Voivodeship, in east-central Poland.

[1] During World War II, in summer 1941, about 2,600 Jews from nearby villages are murdered in mass executions perpetrated by an Einsatzgruppen.

[2]

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