An ingroup only coheres properly once all members totally misunderstand why outgroupers dislike them, and form a consensus around a wildly wrong statement of the form “they hate us for our X”. Such a statement is the unacknowledged Axiom 0 of every reality distortion field
Jehovahs Witnesses (my childhood religion) do this extremely well. “They hate us because we preach the truth.” Apparently a bible verse has Jesus saying “you are my chosen ones and they will hate you for it”. The more people find JWs preposterous the more it confirms their faith.
