http://en.wikipedia.org/wiki/AntisemitismAntisemitism (also spelled anti-semitism or anti-Semitism) is prejudice against or hostility towards Jews often rooted in hatred of their ethnic background, culture, and/or religion. In its extreme form, it "attributes to the Jews an exceptional position among all other civilizations, defames them as an inferior group and denies their being part of the nations" in which they reside.[1] A person who holds such views is called an "antisemite".
Antisemitism may be manifested in many ways, ranging from individual expressions of hatred and discrimination against individual Jews to organized violent attacks by mobs, or even state police, or military attacks on entire Jewish communities. Extreme instances of persecution include the First Crusade of 1096, the expulsion from England in 1290, the Spanish Inquisition, the expulsion from Spain in 1492, the expulsion from Portugal in 1497, various pogroms, the Dreyfus Affair, and perhaps the most infamous, the Holocaust by Nazi Germany.
While the term's etymology might suggest that antisemitism is directed against all Semitic peoples, the term was coined in the late 19th century in Germany as a more scientific-sounding term for Judenhass ("Jew-hatred"),[2] and that has been its normal use since then.[3]