[Yossarian]

(And I am thinking to the people who ask me if I am arab, “Really, see the little round hat in the back. The suit?)

(No sarcasm here.) Please educate my misconception, then.

To my current way of thinking, Arab is a general type of ethnic group, and Jews come from many different ethnic groups.

For instance, I used to get my hair cut by a Jewish lady from Iran. (Yes, I know, Iranian IS NOT Arab, but I'm talking about the general concept here, not the particulars.) She seemed both Jewish and Iranian.

[Jewbacca]

“Arab is a general type of ethnic group, and Jews come from many different ethnic groups.”

Yes, and I have not been genetically linked with the arab ethnic group since roughly the time of Abraham.

[ek_hornbeck]

To my current way of thinking, Arab is a general type of ethnic group,

Not really. They're united by a common language and culture, but "Arabs" are made up of genetically very different people. A Saudi Arab doesn't look very much like an Arab from Lebanon or from Libya, for instance.