According to this, 25% of all Palestinians are Christians. One would think that if the circumstances of the Palestinians were responsible for their behavior, every 4th suicide bomber would be Christian. To my knowledge there haven't been any at all.
I guess they just haven't seen "The Passion of the Christ" yet. It's anti-Semitic, you know. It must be, or else how would Abe Foxman make any money off it?