And Quakers, as well as some historical sect that no longer exist, as well as a number of non-christian eastern religions. But I think that the grandparent's point is fair: most religious and non-religious worldviews allow at least for violence in self and national defense.

... And have the freedom to practice their religion because there are people willing to defend their right to do so, on their behalf.

Not true. They practiced it when they were being slaughtered, too.