I would kill the Nazis who tried to kill me. I would not rape them, or their mothers or wives. I would think that goes without saying, but apparently not.
I blame First World's people glorification of peace. It leads them to a binary, where there are two worlds, the world of peace that they inhabit, and the world of violence which remains foreign and Other (and that, as I've experienced numerous times, they will pay any price to keep that way).
So when they are forced to recognise the legitimacy of violence, they look at it like at a primitive, uncognoscible subhumanity, incapable of ethical complexity ("a vicious tribal conflict", in that USian's words).
Palestinians are clearly justified in violent resistance, therefore Hamas is justified in the weaponisation of rape. By which alchemy "Hamas" is made to equal "Palestinians" (in erasure of Palestinians who oppose them, or are oppressed by them as well as the settlers). and "rape" equals "violence" equals "resistance".
The irony being that the people these white folk are using as comparison when they say "tribal"--the State-refusing, indigenous folk of the world--have for millenia developed cultures of war, whole ethics of war, completely lost on the "civil" peace-lovers.