A quick rule of thumb: whenever you read a sentence that begins with "The Jews," or words to that effect, it is in all likelihood the beginning of an antisemitic rant. Ever since the German ultranationalist historian and politician Heinrich von Treitschke in an 1879 essay first used the phrase "The Jews are our calamity" (Die Juden sind unser Unglück) – a phrase, incidentally, popularized and widely used by the Nazis to buttress their persecution, oppression and mass killing of European Jews – blaming "the Jews" has become the standard m.o. of in-your-face, often quite unsophisticated, antisemites. On Friday, as...