The flag of Palestine is a tricolor of three equal horizontal stripes of black, white and green from top to bottom, overlaid by a red triangle emerging from the hoist (left). It was first adopted on May 28, 1964 by the Palestinian Liberation Organization, and then on November 15, 1988, the organization made it the flag of the Palestinian State. This flag is derived from the Pan-Arab colors and is used to represent the State of Palestine and the Palestinian people.
The colors on the flag have acquired a political meaning as representative of early Islamic Caliphates (Dynasties): Black represents the Prophet Mohammad at the Rashidun Caliphate, white represents the Umayyad Caliphate, the green symbolizes the Fatimid Caliphate, and the red stands for the Khawarij movement.
The meaning of the colors can also be taken from the literary work of an Iraqi poet named Safi Al-Din Al-Hilli, which he composed in the 14th Century. The poet wrote that black stands for their battles, white represents the deeds of the Arab people, green symbolizes their fields, and red signifies their swords.
Yet another explanation of the colors is said to have been taught in their schools: Black represents the oppression and injustice that Palestinians faced and face during their life because of occupiers, white symbolizes Peace, which Palestinians long for throughout their history, green represents the stunning and distinguished nature of Palestine and the red reflects the blood of Palestinians who have passed away during struggles against their enemies.
Sharif Hussein is credited with the design of the current flag of Palestine, as the flag of the Arab Revolt on June 1916. The Palestinian people raised it as the flag of the Arab National Movement in 1917. In 1947, the Arab Ba’ath Party interpreted the flag as a symbol of the liberation and unity of the Arab nation.