@freemo the literal definition of 'Semitic' refers to contemporary ethnonationalities which share a root in the ancient Semitic family of language groups. The meaning of 'antisemitic' uses the sadly more common definition of 'semitic', which was popularised by German nationalist pseudoscientists and philosophers to negatively contrast "the semites" to the 'superior' aryan races. To be correct in your usage, anti-Semitisim would refer to antipathy towards contemporary ethonationalities which share a root in the ancient Semitic family of language groups which does indeed incorporate many Arabic and African ethnonationalities, but "antisemitism" refers to the more specific historical context of specific anti-Jewish sentiment. The elision of the historical context is a common trope of antisemetic rhetoric, along with 'well, actually, hitler was jewish".