Black Hand ( ) was an anti-Zionist and anti-British Jihadist militant organization in Mandatory Palestine . It was founded in 1930 and led until his death in 1935 by Syrian-born Sheikh Izz ad-Din al-Qassam , whose preaching was instrumental in laying the foundations for the formation of the Black Hand , which he used to proclaim jihad and attack Jewish settlers . The idea for such a group appeared to crystallize after the 1929 riots , though one source says a decision was taken after the Day of Atonement incitement at the Wailing Wall in September 1928
1929 riots
1929 Palestine riots
Black Hand (Mandatory Palestine)