It is very clear that in the US the life of an israel citizen is valued way above the one of a palestinian. It is sad to lose that level of humanity.
all of the discourse also conveniently ignores that Israel created a large-scale open-air prison in Gaza and removed any hope left for people living there.
There's a religious dimension, too. Some kinds of Protestants see a modern Jewish state in Palestine as a precondition for the Second Coming of Christ, and actively want to urge that by supporting Israel. This is very common among religious fundamentalists in much of the US.