Insulating members from the outside world makes them underestimate risks and aggression costs

Evidence

A definite advantage of this structure is that it blunts the impact of one of the basic totalitarian tenets—that the world is divided into two gigantic hostile camps, one of which is the movement, and that the movement can and must fight the whole world—a claim which prepares the way for the indiscriminate aggressiveness of totalitarian regimes in power. Through a carefully graduated hierarchy of militancy in which each rank is the higher level’s image of the nontotalitarian world because it is less militant and its members less totally organized, the shock of the terrifying and monstrous totalitarian dichotomy is vitiated and never full realized; this type of organization prevents its members’ ever being directly confronted with the outside world, whose hostility remains for them a mere ideological assumption. They are so well protected against the reality of the nontotalitarian world that they constantly underestimate the tremendous risks of totalitarian politics. — Hannah Arendt, The Origins of Totalitarianism, 857

Categorization

• DEEPTHINKING: The graduated-hierarchy mechanism explains how a movement can hold a ‘monstrous dichotomy’ worldview yet never let its own members feel its full implication — a recursive doubling of the membrane metaphor that answers how fanaticism coexists with institutional prudence.
• XREF: Directly relevant to reading Islamophobia organizing: how ‘The world is divided into two camps’ framing gets softened by institutional layering; parallels Gramsci’s hegemony concept from the reader’s scaffolding toolkit.