 This event was wrongly blamed on the Jews and sparked widespread Anti-Jewish pogroms in the Russian Empire, which lasted for three years, from 27 April 1881 to 1884.The Warsaw pogrom of 1881 worsened Polish-Jewish relations, and was criticized by some members of the Polish elite.Historian Michael Ochs notes that period from 1863 to 1881 was witnessing the increase of anti-Semitism in the Russian-controlled Poland.