Overlooking that it was Jewish land originally, the fact that they consider Jews sub-human is certainly a factor in their willingness to kill Jews.
It hasn't been their home in nearly 1500 years. They left. Someone else took over. They needed to get over it. You don't see Native Americans rise up to kill the white man who took their land 420 years ago.
Also are you seriously implying that Palestinians think Jews are sub-human but Israelis don't think Palestinians aren't? Israelis literally gun down and murder PEACEFUL protestors, some times even randomly chucking grenades over the border wall to hope it kills someone.