Mutual groundless suspicion between communities signals shared insecurity rather than delusion.

Evidence

In both cases the suspicion was hardly based on evidence, but it is important to consider it as a symptom of a more general feeling of insecurity experienced in both communities, the topic that we will address in the following section. — James Renton, Ben Gidley (eds.), Antisemitism and Islamophobia in Europe, 1761

Categorization

• XREF: connects to: Self-described mind-control victims form communities despite no evidence — Michael Barkun, A Culture of Conspiracy: Apocalyptic…, 392