There is a line of argument which goes like this: "both Arabs and Israelis are Semites, therefore to accuse Arabs of anti-semitism is essentially meaningless, because it implies that they are against themselves". Next time you read an article containing the term anti-semitism, mentally replace it with anti-Jewish (which is the article's real intention) and this bogus argument vanishes.

The fact that the charge of anti-semitism is used to deflect genuine criticism of Israeli actions is another matter altogether, of course.