Are there Palestinians?

I quote from Wikipedia:

Arab, in its common modern definition, is...a widely employed example of panethnicity or pan-nationalism. Arabs are a grouping of people (some would say "peoples") of various ancestral origins, religious backgrounds and historic identities (much in the same way peoples merged though assimilation in other parts of the world, as in the case of, say, Anglo-Saxons, Danes, and others merging with indigenous British people to create an English ethnicity), whose members identify as such on one or more of the grounds of language, culture, or genealogy...... 

Those self-identifying as Arab, however, rarely deny the diversity of the Arabs. There are always multiple identities, with a more localized prioritized ethnic orientation, such as Egyptian, Lebanese, or Palestinian — in addition to further tribal, village,and/or religious identities.

Certainly I have met and talked with people who called themselves Palestinians. As the child of immigrants to the United States who has lived in two other countries and visited more than 50, I find it quite reasonable to think of people having various self identities -- religious, linguistic, national, ethnic, professional, local -- according to the context of the discussion. I also know that my parents, naturalized American citizens, regarded themselves as Americans, and I see no reason not to believe that many people see themselves as ethnic Palestinians and indeed as citizens of Palestine.

I would hope that Newt Gingrich would not consider Austrians or citizens of the German speaking Cantons of Switzerland to be Germans because they share Germanic ethnicity.