"Understanding... requires following key events at least since the 1948 war—the Palestinian Nakba ("Catastrophe"). Israel forcibly displaced over 80% of the indigenous Palestinian population through mass deportations, internment of civilians, massacres, and the systematic destruction of Palestinian infrastructure. More than 200,000 of the 751,000 Palestinians recorded as refugees fled to the Gaza Strip, tripling its prewar population."
January 1, 1970
https://en.wikiquote.org/wiki/Destruction_of_Conditions_of_Life_(PHR-I)