The problem is that Coulter attacks him at the detriment to Jews:
by implication she is saying Jews (Israel?) FALSELY accuse Muslims (Palestinians/Arabs?) of attacking first and then Jews/Israel can claim they only responded in self-defense — also equating that self-defense with indefensible acts (rape).
Otherwise what is the humor? Why is it necessary to point out he is Jewish? She did not say he was a liberal.
He’s the kind of Jew that gives Jews a bad name.
She is being sarcastic.