Riot perpetrated by Palestinian Arabs, including attacks on Jews, in and around Jaffa, starting 1 May 1921. The riots were sparked by clashes surrounding the May Day Parade, and later spread to numerous Jewish localities. They were met with armed response by Mandatory security forces and Jewish militias. Overall, 47 Jews and 48 Arabs were killed during the riots. The Haycraft Commission was established in order to investigate the riots, with its conclusions leading to the publication of the 1922 White Paper.