Hamas has been designated as a terrorist group by the US. That is simply a fact. They kill, torture, and rape women and children including American citizens. If a foreign citizen hates the US and its policy toward Hamas, maybe they should stay home and not come to such an evil country. At the very least don't terrorize Jewish students with threats of genocide while praising a terrorist state.
Like the Germans who were relentlessly bombed during WWII, if the citizens of a country support barbarians to govern them, then they risk having to pay a price. Until they learn to govern themselves as a civilized people, they will be subject to the consequences. It is no one's fault but their own.
If I protested the way Israel is waging this war, would I be I pro-Hamas?