Some of these matters are not entirely irrelevant , but they should not serve to avoid the real issues. Extremists tend to make sweeping claims or judgments on little or no evidence, and they have a tendency to confuse similarity with sameness. The sloppy use of analogy is a treacherous form of logic and has a high potential for false conclusions. They tend to project wished-for conclusions and to exaggerate the significance of information that confirms their beliefs while derogating or ignoring information that contradicts them. They tend to be motivated by feelings more than facts, by what they want to exist rather than what actually does exist.
Extremists do a lot of wishful and fearful thinking.
Extremists generally tend to judge themselves or their interest group in terms of their intentions, which they tend to view very generously, and others by their acts, which they tend to view very critically. They would like you to accept their assertions on faith, but they demand proof for yours. They tend to engage in special pleading on behalf of themselves or their interests, usually because of some alleged special status, past circumstances, or present disadvantage. To the extremist, opponents hold opposing positions because they are bad people, immoral, dishonest, unscrupulous, mean-spirited, hateful, cruel, or whatever, not merely because they simply disagree, see the matter differently, have competing interests, or are perhaps even mistaken. Extremists have a tendency to see the world in terms of absolutes of good and evil, for them or against them, with no middle ground or intermediate positions.