Palestinians refer to the event surrounding the establishment of the State of Israel as the Nakba, or catastrophe, and hold Nakba commemorations on May 15, the day of the start of the 1948 War of Independence, to mark the Palestinian displacement and refugee crisis. Some Palestinian politicians, writers and commentators have used the concept of the Nakba to insinuate that the very existence of Israel is a catastrophe and question the legitimacy of Israel as the Jewish national homeland.