In the early 1900s, Palestine experienced waves of Jewish migration and colony-building, including the founding of Tel Aviv in 1909 and the creation of the Haganah (the Jewish paramilitary organization) in 1920. On August 15, 1929, Zionist groups organized a great Jewish demonstration at the al-Buraq Wall (the Western Wall of the Al-Aqsa Mosque) in Jerusalem. This sparked widespread clashes known as the Al-Buraq Disturbances between Arabs, Jews, and British colonial soldiers. 133 Jews were killed, and 116 Arabs were killed.
Near Herod’s Gate and Bab al-Sahira in Jerusalem, British mandate soldiers round up and arrest Palestinians for protesting Zionist settlement and British colonialism, August 1929. Via PalestineRemembered. (Corroborating source: https://www.palestine-studies.org/en/node/236017 )