siege mentality 
noun
A defensive or paranoid attitude based on the belief that others are hostile towards one: once you develop a siege mentality, anything is believable...
- He let out an almost cartoony frown as he heard the unmistakable reloading of a shotgun and zigzagged past wailing shoals of feverish shoppers who, if he had been inclined towards the siege mentality, seemed to form a deliberate barricade.
- And I understand some people wanting to protect their homes in the light of this dreadful attack, but we must not give in to a siege mentality based on fear.
- It is certainly not a siege mentality and it is not an attempt to block out the media.
- chalkiness
- chalkogen
- chalkogenide
- chalkone
- chalk pit
- chalk something off
- chalk something out
- chalk something up
- chalk-stone
- chalk-stripe
- chalk-striped
- chalk talk
- chalk white
- chalky
- chalky white
- challah
- challan
- challenge
- challengeable
- challenged
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- challenger bank
- Challenger Deep
- challenging
- challengingly