The suggestion that the term "anti-semitism" is validly applied to racism directed at Arabs is hardly a new one. Just type "anti-arab + anti-semitism" into google and it comes up with 52,000 referances.

I was reading somewhere about how the renowned fertility expert Sir Robert Winston was curious about using his DNA as a way of working out where his ancestors had lived and so forth. He camne up against the problem that there weren't enough differences between Jewish DNA and Arabic DNA to sort out that kind of stuff.