Third, I know you’re just trying to troll, but we generally use anti-semetic to refer to anti-jewish.
More specifically, “antisemitism” comes from the German Antisemitismus which was popularized as a more technical-sounding euphemism for Judenhass (Jew-hate). It never meant “antipathy towards Semitic-language speakers”.
The people who proudly called themselves antisemites, and formed the Antisemiten-Liga (Antisemites League) did not target Arabs, Ethiopians, or other speakers of the Semitic language family; they targeted Jews.
More specifically, “antisemitism” comes from the German Antisemitismus which was popularized as a more technical-sounding euphemism for Judenhass (Jew-hate). It never meant “antipathy towards Semitic-language speakers”.
The people who proudly called themselves antisemites, and formed the Antisemiten-Liga (Antisemites League) did not target Arabs, Ethiopians, or other speakers of the Semitic language family; they targeted Jews.