Shlomo_Ben-Yosef Shlomo Ben-Yosef (May 7, 1913 in Poland as Shalom Tabachnik – June 29, 1938) was a noted (and controversial) member of the Revisionist Zionist underground Irgun Zvai Leumi. He is most noted for his participation in an April 21, 1938 attack on an Arab bus, specifically intended as a retaliation for an earlier attack by Arabs against Jews, and emblematic as a rejection of the establishment policy of Havlagah, or restraint.