Hot Take :
American academia is more sympathetic to Palestine because they are stuck in a Cold War mentality, where Israel is seen as a puppet regime of the United States, and imperialism is bad.
Not really, this is a natural development of the beliefs American social progressive holds:
1: White people are privileged.
2: Settler states are illegal states.
3: Marginalized groups are always right.
When those belief meet the fact on the ground:
1: American Jews are a wealthy White group.
2: Israel is a settler state.
3: Palestinian are marginalized.
This is the logical result.
This has nothing to do with the Cold War and communism, as communism didn't embrace this primitive understanding of the world. What's surprising is not that this backlash happened but that no one saw it coming. I would also say that the very same students who is victimized by this, were 100% onboard until the Leopard Ate Their Face, if this had been about the Rohingya conflict and it was Buddhist students being target, they would at very least have turned their eyes the other way, if they hadn't taken active part in it.