The Palestinians.
Sure they are. The definition of race:
a : a family, tribe, people, or nation belonging to the same stock
b : a class or kind of people unified by shared interests, habits, or characteristics
They are certainly a people, and a class of people unified by shared interests.
So are Jews. So are all peoples. Genetically, there's no Jewish people, or Palestinian people, etc. It's just a cluster of genetic probabilities. But races are social conventions -- the tendency of a people to see themselves as being a group, or the tendency for others to see a group of people as a group. There's a talking point among the worst sort of Zionists to deny the Palestinians are a race, simply because it gives them a way to deny the racism of Israeli policy, but the policy itself destroys that talking point.