I can only explain their craziness, I can't make it make sense. XD
The best I can figure is that when the U.N. created the state of Israel people who follow Christianity and Judaism believed they were given back their holy land. I'm sure there's someone on the internet that can explain the history better than I can but what a lot of western believes think is that it's theirs and not the Palestinian's. So when the Palestinians try to get, or keep in most cases, a slice everyone to the west gets up in arms.
It's along the same mentality as considering asylum seekers as "invaders" to the U.S.