They are holding the Israeli gov't responsibile for the violence that is to come in Gaza in the next days (already started). Your argument that surrender is what makes societies function is absolutely wrong, otherwise it would be applicable in places like Ukraine.
It absolutely is applicable to places like Ukraine, and hopefully will be applied there when the time comes. In Ukraine it is not yet obvious who will win - not only each side thinks they have the advantage, but pretty much most outside observers agree that it's still undecided.
Think about other similar large wars: France surrendered in ww2. Later Germany did as well. Each of those failed to turn into a decade long blood bath. Then Vietnam - US left, the south lost, and Americans are now moving there for retirement.
No, if you release such a letter in the vicinity of such an attack, it is pure anti-semitism. They deserve a scolding for that. I am not for prohibiting their careers, student can be stupid some times, but this should not be accepted under any circumstance and it is pretty embarrassing for Harvard.
