As around 75% of zionists are only first, second or third generation nationals, many have passports from their parents or grand parents families that they can rely on. Netenyahu himself might have a passport from his fathers Polish birthplace but it would not have the surname Netenyahu on it because his real name was Benzion Mileoikowsky. Many early immigrants including David Ben Gurion (real name David Grun) and Golda Meir (real name Goldie Mabovitch) were encouraged- after 1948 when the countries name was changed from Palestine to Israel after a minority settler community with western arms took control- to change their names to Hebrew sounding ones to give the illusion of historical relevance to their claims. It was for the same reason they quickly changed the names of towns and villages to Hebrew names. Hebrew itself was a dead language only used for religious purposes similar to Latin until 1948 when the atheist early leaders realised that re-inventing it as a spoken national language would also give the illusion of historical relevance to their claim over the land of Palestine. A good source of information on this historical reality can be gained by reading “The invention of the land of Israel” by Shlomo Sands who is an Isreal academic. Another good source of actual history rather than propaganda would be “Palestine, A 4000 year history” by Nur Masalha. Whether these people are leaving because they abhor the direction of travel of Israel or whether they are intending to just sit it out and return later when the Zionist dream of the complete annihilation of the Palestinian people first discussed by among others Theodore Herzl in the early 1890s in the USA is debatable.