You're asking a fundamentally interesting question that has horrifying implications.
What makes someone OK with murder? How do you flip someone from a civilian mindset of more or less 'love thy neighbor' to a soldier mindset of 'kill the bad guy'?
In rough terms there are a lot of simple answers, like 'portray the other as a threat to your family/way of life/values'
But here we're talking about someone that believes human rights workers are valid targets unless they have her same passport. That makes the origins of the belief much harder to imagine.
What makes someone OK with murder? How do you flip someone from a civilian mindset of more or less 'love thy neighbor' to a soldier mindset of 'kill the bad guy'?
In rough terms there are a lot of simple answers, like 'portray the other as a threat to your family/way of life/values'
But here we're talking about someone that believes human rights workers are valid targets unless they have her same passport. That makes the origins of the belief much harder to imagine.