I am very wary of explanations of the world which emphasize “the people who disagree with this are evil” or “the people who disagree with this are stupid”. If only people weren’t deliberately trying to do harm or remain ignorant, they would of course agree with the speaker. This leaves no room for different (but reasonable) priorities, different tolerances for risk, different trusted authorities, etc. Plus, when evil and stupid do exist, they always think that their opponents are actually the evil, stupid ones. So an individual ought to remain humble: if he’s sure that he’s on the side of God fighting a clear battle against evil, that itself is evidence that he isn’t.