Millions of Palestinians across the world are marking the 78th anniversary of the Nakba. The word is Arabic for "catastrophe." It refers to the mass expulsion and flight of some 750,000 Palestinians from what is now Israel during the 1948 war that led to the creation of the modern Israeli state.

In Gaza, demonstrators donned traditional clothing and marched carrying photos of keys as a symbol of their right to return home. It is the third Nakba commemoration since the war in Gaza began. The United Nations says more than three-quarters of homes in the territory have been damaged in more than two years of fighting between Israel and Hamas. This has caused the renewed displacement of almost two million Palestinians, many of them multiple times. Some Gaza residents born decades after their ancestors' expulsion have called the current situation a new Nakba.