The 1920 Nebi Musa riots or 1920 Jerusalem riots took place in the British-controlled part of Occupied Enemy Territory Administration from 4 to 7 April 1920 in and around the Old City of Jerusalem. Five Jews were killed and several hundred injured; four Arabs were killed and 18 injured; seven Britons were injured. The riots coincided with and are named after the Nebi Musa festival, which was held every year on Easter Sunday, and followed rising tensions in Arab–Jewish relations. The riots came shortly after the Battle of Tel Hai amid increasing pressure on Arab nationalists in Syria in the course of the Franco-Syrian War.
Arab religious leaders gave speeches during the festival (in which large numbers of Muslims traditionally gathered for a religious procession) that included slogans referencing Zionist immigration and previous confrontations over outlying Jewish villages in the Galilee. The trigger that turned the procession into a riot is not known with certainty.
The British military administration of Palestine was criticized for withdrawing troops from inside Jerusalem and because it was slow to regain control. As a result of the riots, trust among the British, Jews, and Arabs eroded. One consequence was that the region's Jewish community increased moves towards an autonomous infrastructure and security apparatus parallel to that of the British administration.
In its wake, sheikhs of 82 villages around the city and Jaffa, claiming to represent 70% of the population, issued a document protesting the demonstrations against the Jews. This condemnation may have been procured with bribes. Notwithstanding the riots, the Jewish community held elections for the Assembly of Representatives on 19 April 1920 among Jews everywhere in Palestine except Jerusalem, where they were delayed to 3 May. The riots also preceded the San Remo conference, which was held from 19 to 26 April 1920, and at which the fate of the Middle East was to be decided.
The contents and proposals of both the Balfour Declaration of 1917 and Paris Peace Conference, 1919, which later concluded with the signing of the Treaty of Versailles, were the subject of intensive discussion by both Zionist and Arab delegations, and the process of the negotiations was widely reported in both communities. In particular, the collapse of the Ottoman Empire led to an undertaking by the victorious powers, predominantly Great Britain and France, to assume a 'holy mission of civilization' in the power vacuum of the Middle East. Under the Balfour Declaration, a homeland for the Jewish people was to be created in Palestine. The principle of self-determination affirmed by the League of Nations was not to be applied to Palestine, given the foreseeable rejection by the people of Zionism, which the British sponsored. These post-World War I arrangements both for Palestine and other Arab societies led to a radicalization of the Arab world.
On 1 March 1920, the death of Joseph Trumpeldor in the Battle of Tel Hai at the hands of a Shia group from Southern Lebanon caused deep concern among Jewish leaders, who made numerous requests to the OETA administration to address the Yishuv's security and forbid a pro-Syrian public rally. However, their fears were largely discounted by the Chief Administrative Officer General Louis Bols, Military Governor Ronald Storrs and General Edmund Allenby, despite a warning from the head of the Zionist Commission Chaim Weizmann that a "pogrom is in the air", supported by assessments available to Storrs. Communiqués had been issued about foreseeable troubles among Arabs, and between Arabs and Jews. To Weizmann and the Jewish leadership, these developments were reminiscent of instructions that Russian generals had issued on the eve of pogroms. In the meantime, local Arab expectations had been raised to a pitch by the declaration of the Syrian Congress on 7 March of the independence of the region of Syria in the Kingdom of Syria, with Faisal as its king, that included the British-controlled territory within its claimed domain. On 7 and 8 March, demonstrations took place in all cities of Palestine, shops were closed and many Jews were attacked. Attackers carried slogans such as "Death to Jews" or "Palestine is our land and the Jews are our dogs!"
Jewish leaders requested that OETA authorise the arming of the Jewish defenders to make up for the lack of adequate British troops. Although this request was declined, Ze'ev Jabotinsky, together with Pinhas Rutenberg, led an effort to openly train Jewish volunteers in self-defense, an effort of which the Zionist Commission kept the British informed. Many of the volunteers were members of the Maccabi sports club and some of them were veterans of the Jewish Legion. Their month of training largely consisted of calisthenics and hand to hand combat with sticks. By the end of March, about 600 were said to be performing military drills daily in Jerusalem. Jabotinsky and Rutenberg also began organizing the collection of arms.
The Nebi Musa festival was an annual spring Muslim festival that began on the Friday before Good Friday and included a procession to the Nebi Musa shrine (tomb of Moses) near Jericho. It had apparently existed since the time of Saladin. Arab educator and essayist Khalil al-Sakakini described how tribes and caravans would come with banners and weapons. The Ottoman Turks usually deployed thousands of soldiers and even artillery to keep order in the narrow streets of Jerusalem during the Nebi Musa procession. However, Storrs issued a warning to Arab leaders, but deployed only 188 policemen.
By 10:30 a.m. on Sunday, 4 April 1920, 60,000–70,000 Arabs had congregated in the city square for the Nebi Musa festival, and groups had been attacking Jews in the Old City's alleys for over an hour. A speech marked by anti-Zionist rhetoric was delivered by Amin al-Husayni from the balcony of the Arab Club. Musa al-Husayni, his uncle, the mayor, was also with him and spoke from the municipal building's balcony in similar terms. According to testimony given by Fayyad al-Bakri to the Palin Commission, however, the rioting began when the Hebron banner he was holding while standing on Jaffa Street outside the Crédit Lyonnais Bank was spat on by a Jew and when the latter was pushed away, Jewish bystanders began throwing stones.
The editor of the newspaper Suriya al-Janubia (Southern Syria), Aref al-Aref, another Arab Club member, delivered a speech on horseback at the Jaffa Gate. The nature of his speech is disputed. According to Benny Morris, he said "If we don't use force against the Zionists and against the Jews, we will never be rid of them", while Bernard Wasserstein wrote "he seems to have co-operated with the police, and there is no evidence that he actively instigated violence". In fact, Wasserstein adds, "Zionist intelligence reports of this period are unanimous in stressing that he spoke repeatedly against violence".
The crowd reportedly shouted "Independence! Independence!" and "Palestine is our land, the Jews are our dogs!" Arab police joined in applause, and violence started. The local Arab population ransacked the Jewish Quarter of Jerusalem. The Torath Chaim Yeshiva was raided, and Torah scrolls were torn and thrown on the floor, and the building then set alight. During the next three hours, 160 Jews were injured.
Khalil al-Sakakini witnessed the eruption of violence in the Old City:
"[A] riot broke out, the people began to run about and stones were thrown at the Jews. The shops were closed and there were screams. ... I saw a Zionist soldier covered in dust and blood. ... Afterwards, I saw one Hebronite approach a Jewish shoeshine boy, who hid behind a sack in one of the wall's comers next to Jaffa Gate, and take his box and beat him over the head. He screamed and began to run, his head bleeding and the Hebronite left him and returned to the procession. ... The riot reached its zenith. All shouted, "Muhammad's religion was born with the sword". ... I immediately walked to the municipal garden. ... my soul is nauseated and depressed by the madness of humankind."