The Palestinian flag was designed by Sharif Hussein for the Arab revolt against the Ottoman Empire in 1916. In 1917 it was raised as the flag of the Arab National movement, in 1948 the all-Palestine Government adopted it in Gaza, and the Arab League recognized it as the flag of the Palestinian people. It was adopted as the flag of the Palestinian people by the Palestine Liberation Organization (PLO) in 1964, then in 1988 the PLO adopted the flag as the flag of the State of Palestine.