It makes total sense. They’re Palestinians and in their logic it’s okay to kill Palestinians. Being a Christian is secondary to their desire to kill Palestinians.
The crime of Palestinians? Resisting the theft of their land and culture by a completely foreign people from Europe who are funded by a European Jewish plutocracy.
Since the Balfour declaration, the mechanism in which the Jewish plutocrats declared the native Palestinian population as non-Jewish minority even though they were the entirety of the population by using the British empire as the military force to facilitate European Jewish population transfer obviously against the wishes of the indigenous people, the Palestinians have been resisting global superpower after global superpower. Their resistance is noble.