The Irgun 's first steps were in the aftermath of the Riots of 1929 . In the Jerusalem branch of the Haganah there were feelings of disappointment and internal unrest towards the leadership of the movements and the Histadrut ( at that time the organization running the Haganah ) . These feelings were a result of the view that the Haganah was not adequately defending Jewish interests in the region . Likewise , critics of the leadership spoke out against alleged failures in the number of weapons , readiness of the movement and its policy of restraint and not fighting back . On April 10 , 1931 , commanders and equipment managers announced that they refused to return weapons to the Haganah that had been issued to them earlier , prior to the Nebi Musa holiday . These weapons were later returned by the commander of the Jerusalem branch , Avraham Tehomi , a.k.a. " Gideon " . However , the commanders who decided to rebel against the leadership of the Haganah relayed a message regarding their resignations to the Vaad Leumi , and thus this schism created a new independent movement
Riots of 1929
1929 Palestine riots
Irgun