This article is specifically referring to antisemitism.
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”), and that has been its normal use since then. For the purposes of a 2005 U.S. governmental report, antisemitism was considered “hatred toward Jews—individually and as a group—that can be attributed to the Jewish religion and/or ethnicity.”