The problem is not just that this word for anti-Jewish prejudice was popularized by a perpetrator rather than the victims, but that it easily lends itself to pedantic objections. Some critics claim that Jews are “not real Semites” and so anti-Semitism doesn’t refer to them. In the Arab world, conversely, others claim that they can’t be anti-Semitic, because Arabs are also Semites. This is not just a Middle Eastern canard. In 2015, the former U.S. presidential candidate Ralph Nader declared that “the Semitic race is Arabs and Jews and the Jews do not own the phrase anti-Semitism,” adding that “the worst anti-Semitism in the world today is against Arabs and Arab-Americans.”
All of this is ahistorical nonsense. The term anti-Semitism was chosen by an anti-Jewish bigot to lend a sophisticated sheen to his hatred of Jews. The term has never popularly referred to Arabs or other “Semites,” which is why the Dictionary.com definition of anti-Semitism reads: “discrimination against or prejudice or hostility toward Jews.” Anyone suggesting otherwise is at best ignorant, or at worst attempting to undermine discussions of anti-Jewish prejudice.
 — Changing How You Spell 'Anti-Semitism' Won’t Stop Anti-Semitism
