Poale Zion (also spelled Poalei Tziyon or Poaley Syjon, meaning "Workers of Zion") was a Movement of Marxist Zionist Jewish workers circles founded in various cities of the Russian Empire about the turn of the 20th century after the Bund rejected Zionism in 1901.
Read more about Poale Zion: Formation and Early Years, Split, The Holocaust, Poale Zion's Legacy