Expulsions and exoduses of Jews in the context of "Ethnic cleansing"

Antisemitism, the prejudice or discrimination against Jews, has had a long history since the ancient times. While antisemitism had already been prevalent in ancient Greece and the Roman Empire, its institutionalization in European Christianity after the destruction of the ancient Jewish cultural center in Jerusalem caused two millennia of segregation, expulsions, persecutions, pogroms, genocides of Jews, which culminated in the 20th-century Holocaust in Nazi German-occupied European states, where 67% of all European Jews were murdered.

Aliyah (US: /ˌæliˈɑː/, UK: /ˌɑː-/; Hebrew: עֲלִיָּה, romanized: ălīyyā, lit. 'ascent') is the immigration of Jews from the diaspora to, historically, the geographical Land of Israel or the Palestine region, where in the 20th century the State of Israel was established. Traditionally described as "the act of going up" (towards the Jewish holy city of Jerusalem), moving to the Land of Israel or "making aliyah" is one of the most basic tenets of Zionism. The opposite action – emigration by Jews from the Land of Israel – is referred to in the Hebrew language as yerida (lit. 'descent'). The Law of Return that was passed by the Israeli parliament in 1950 gives all diaspora Jews, as well as their children and grandchildren, the right to relocate to Israel and acquire Israeli citizenship on the basis of connecting to their Jewish identity.

For much of their history, most Jews have lived in the diaspora outside of the Land of Israel due to various historical conflicts that led to their persecution alongside multiple instances of expulsions and exoduses. In the late 19th century, 99.7% of the world's Jews lived outside the region, with Jews representing 2–5% of the population of the Palestine region. Despite its historical value as a national aspiration for the Jewish people, aliyah was acted upon by few prior to the rise of a national awakening among Jews worldwide and the subsequent development of the Zionist movement in the late 19th century; the large-scale immigration of Jews to Palestine had consequently begun by 1882. Since the Israeli Declaration of Independence in 1948, more than 3 million Jews have made aliyah. As of 2014, Israel and the Israeli-occupied territories contain approximately 42.9 percent of the world's Jewish population.

The persecution of Jews is a major component of Jewish history, and has prompted shifting waves of refugees and the formation of diaspora communities around the world. The earliest major event was in 597 BCE, when the Neo-Babylonian Empire conquered the Kingdom of Judah and then persecuted and exiled its Jewish subjects. Antisemitism has been widespread across many regions of the world and practiced by many different empires, governments, and adherents of other religions.

Jews have been commonly used as scapegoats for tragedies and disasters such as in the Black Death persecutions, the 1066 Granada massacre, the Massacre of 1391 in Spain, the many pogroms in the Russian Empire, and the ideology of Nazism, which led to the Holocaust, the systematic murder of six million Jews during World War II.

Holocaust denial is the negationist and antisemitic claim that Nazi Germany and its collaborators did not commit genocide against European Jews during World War II, ignoring overwhelming historical evidence to the contrary. Theories assert that the genocide of Jews is a fabrication or exaggeration. Holocaust denial includes making one or more of the following false claims: that Nazi Germany's "Final Solution" was aimed only at deporting Jews from the territory of the Third Reich and did not include their extermination; that Nazi authorities did not use extermination camps and gas chambers for the mass murder of Jews; that the actual number of Jews murdered is significantly lower than the accepted figure of approximately six million; and that the Holocaust is a hoax perpetrated by the Allies, Jews, or the Soviet Union.

Holocaust denial has roots in postwar Europe, beginning with writers such as Maurice Bardèche and Paul Rassinier. In the United States, the Institute for Historical Review gave Holocaust denial a pseudo-scholarly platform and helped spread it globally. In the Islamic world, Holocaust denial has been used to delegitimize Israel; deniers portray the Holocaust as a fabrication to justify the creation of a Jewish state. Iran is the leading state sponsor, embedding Holocaust denial into its official ideology through state-backed conferences and cartoon contests. In former Eastern Bloc countries, deniers do not deny the mass murder of Jews but deny the participation of their own nationals.

The Bar Kokhba refuge caves are natural caves that were used for shelter by Jewish refugees during the later phases of the Bar Kokhba revolt. Most of the refuge caves were located in the Judaean Desert, nestled within steep cliffs far away from settlements, many overlooking the Dead Sea and the Jordan Valley. Some were also found in ravines flowing into the Dead Sea, while others were nestled within the Judaean Mountains. Unlike the other two hideout systems used by the rebels, the man-made rock-cut hiding complexes, and the hard-to-reach cliff shelters which often contain hewn installations, the refuge caves remained largely untouched by human intervention.

Jews taking shelter in refuge caves aimed to escape the Roman army during its suppression of the revolt. These caves are thought to have offered sanctuary to those in the eastern Judaean Mountains and the Jordan Valley. Some caves show signs of successful refuge, while others contain skeletal remains of adults and children, indicating deaths due to starvation, thirst, or encounters with Roman forces, as evidenced by the construction of siege camps and the discovery of arrowheads embedded in cave ceilings.

New Christian (Latin: Novus Christianus; Spanish: Cristiano Nuevo; Portuguese: Cristão-Novo; Catalan: Cristià Nou; Ladino: Kristiano Muevo; Arabic: المسيحيون الجدد) was a socio-religious designation and legal distinction referring to the population of former Jewish and Muslim converts to Christianity in the Spanish and Portuguese empires, and their respective colonies in the New World. The term was used from the 15th century onwards primarily to describe the descendants of the Sephardic Jews and Moors that were baptized into the Catholic Church following the Alhambra Decree of 1492. The Alhambra Decree, also known as the Edict of Expulsion, was an anti-Jewish law made by the Catholic Monarchs upon the Reconquista of the Iberian Peninsula. It required Jews to convert to Roman Catholicism or be expelled from Spain. Most of the history of the "New Christians" refers to the Jewish converts, who were generally known as Conversos (or in a more derogatory fashion Marranos), while the Muslim converts were called Moriscos.

Because these conversions were achieved in part through coercion and also with the threat of expulsion, especially when it came to the Jews, the Catholic Inquisition and Iberian monarchs suspected a number of the "New Christians" of being crypto-Jews. Subsequently, the Spanish Inquisition and then the Portuguese Inquisition was created to enforce Catholic orthodoxy and to investigate allegations of heresy. This became a political issue in the kingdoms of the Portuguese–Spanish Union itself and their respective empires abroad, particularly in Spanish America, Portuguese America, and the Caribbean. Sometimes "New Christians" travelled to territories controlled by Protestant enemies of Spain, such as the Dutch Empire, the early English Empire, or Huguenot-influenced areas of the Kingdom of France such as Bordeaux, and openly practiced Judaism, which furthered suspicion of Jewish crypsis. Nevertheless, a significant number of those "New Christians" of converso ancestry were deemed by Spanish society as sincerely Catholic and they still managed to attain prominence, whether religious (St. John of the Cross, St. Teresa of Ávila, St. John of Ávila, St. Joseph of Anchieta, Tomás Luis de Victoria, Tomás de Torquemada, Diego Laynez, Francisco de Vitoria, Francisco Suárez, and others) or political (Juan de Oñate, Luis de Carvajal y de la Cueva, Hernán Pérez de Quesada, Luis de Santángel, and others).