He later escaped and joined Jewish guerrilla warfare group Hashomer Hatzair.
In his youth, Emanuele was a Jewish youth leader in the Hashomer Hatzair Socialist–Zionist youth movement in Milan.
There she met Zvi Gezari, an early member of the kibbutz movement Hashomer Hatzair.
Accordingly: six seats were given to Jewish communists (the Jewish faction of the Polish Workers' Party), four seats to Bund representatives, four seats to Ihud, three seats to Poale Zion Left (leftist faction of Workers of Zion), three to Poale Zion Right, and one place to Hashomer Hatzair.
Born in Grodzisk Mazowiecki (then part of the Russian Empire, today Poland, Bentov studied law for two years at the University of Warsaw and was one of the founding members and leaders of Hashomer Hatzair in Poland.