Palestinians around the world are commemorating 75th anniversary of Nakba Day (Catastrophe) on Monday to reaffirm their right of return to their ancestral lands occupied by Israel.

Palestinians use the term "Nakba," meaning "catastrophe" in Arabic, to refer to their expulsions by Zionists from their lands in 1948.

On this day in 1948, the new state of Israel was declared and nearly 800,000 out of 1.4 million Palestinians were displaced from their homes to the West Bank, Gaza Strip and neighboring Arab countries.

Meanwhile, the United Nation is commemorating the Nakba by organizing a High-Level Special Meeting today. 

Palestinian President Mahmoud Abbas will deliver a keynote address at the meeting.