There’s a school of thought in some leftist circles that holds that the “indigenous” people have the right to kill their “colonizers”.
The Muslims fit the profile of “colonizers” so does that mean that we “indigenous” American have right to kill them?
The muslims want to take over the entire world and kill all nonbelievers. So, at some point, the nonbelievers will have no choice except to fight back. Normalcy bias and the refusal to identify evil are working against the nonbelievers.