PHOTO GALLERY: Palestinians protest on 68th anniversary of 1948 'Nakba'

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Palestinian men wave the national flag and chant slogans during a rally to commemorate the 68th anniversary of the "Nakba" on May 15, 2016 in the West Bank city of Nablus (AFP)

A Palestinian boy holds a large key in front of a poster during a rally to commemorate the 68th anniversary of the "Nakba" on May 15, 2016 in the West Bank city of Nablus (AFP)

A Palestinian girl wears earrings bearing the number "68" and a hair slide in the shape of a key on May 15, 2016 in the besieged Gaza strip during a rally to commemorate the "Nakba" (AFP)

A Palestinian waves national flags and holds a large key on May 15, 2016 in Gaza city during a rally to commemorate the "Nakba" (AFP)

Palestinians hold a large key, symbolising the homes left by Palestinians in 1948, on May 15, 2016 in Gaza city during a rally to commemorate the "Nakba" or "catastrophe" in Arabic in reference to the establishment in 1948 of the state of Israel (AFP)

Palestinians wave national flags on May 15, 2016 in Gaza city during a rally to commemorate the "Nakba" or "catastrophe" in Arabic in reference to the establishment in 1948 of the state of Israel (AFP)

A foreign activist runs for cover from tear gas fired by Israeli troops during clashes at a protest ahead of Nakba day, in the occupied West Bank village of Bilin near Ramallah May 13, 2016 (Reuters)

Arab Palestinians in Israel protesters hold Palestinian flags as they march for the right of return for Palestinian refugees who fled their homes or were expelled during the 1948 war that followed the creation of the state of Israel, near Rahat on May 12, 2016 (AFP)

Palestinian refugee Aisha, 53, who says is a former inhabitant of the town of Beersheva, waves a group of keys outside her home in the Khan Yunis refugee camp in the southern Gaza Strip on May 15, 2016, on the 68th anniversary of the "Nakba" (AFP)

Palestinians act in a play enacting "Nakba" or Catastrophe day in the West Bank city of Ramallah, Sunday, May 15, 2016 (AP)

Nakba" means in Arabic "catastrophe" in reference to the creation of the state of Israel 68 years ago in British-mandate Palestine, which led to the displacement of hundreds of thousands of Palestinians who were driven out of their homes during the 1948 war by Zionist militias.