Great Regulars: Either dissenters leave the group,

thus intensifying the single-mindedness of those left behind. Or, as in my jury, dissent is treated as confirmation of the majority view. Thus Holocaust deniers in the style of Mahmoud Ahmadinejad, the president of Iran, treat evidence that 6m Jews did in fact die as further evidence of a Zionist conspiracy.

from Bryan Appleyard: The Sunday Times: From friendship to fascism in one short step

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