Antisemitism (also spelled anti-Semitism)—prejudice, hatred of, or discrimination against Jews has experienced a long history of expression since the days of ancient civilizations, with most of it having originated in the Christian and pre-Christian civilizations of Europe.

While it has been cited as having been expressed in the intellectual and political centers of ancient Greece and the Roman Empire, the phenomenon received greater institutionalization within European Christianity following the dissolution of the ancient center of Jewish culture, Jerusalem, resulting in the forced segregation of Jewish populations and restrictions on their participation in the public life of European society at times.

In the 20th century, antisemitism in Europe, particularly during the reign of Nazi Germany, resulted in the death and dislocation of the majority of Europe's Jewish population.                                                                                Antisemitism (also spelled anti-Semitism)—prejudice, hatred of, or discrimination against Jews has experienced a long history of expression since the days of ancient civilizations, with most of it having originated in the Christian and pre-Christian civilizations of Europe.

While it has been cited as having been expressed in the intellectual and political centers of ancient Greece and the Roman Empire, the phenomenon received greater institutionalization within European Christianity following the dissolution of the ancient center of Jewish culture, Jerusalem, resulting in the forced segregation of Jewish populations and restrictions on their participation in the public life of European society at times.

In the 20th century, antisemitism in Europe, particularly during the reign of Nazi Germany, resulted in the death and dislocation of the majority of Europe's Jewish population.                                https://en.wikipedia.org/wiki/Antisemitism_in_Europe