Lee Harris: “What happens when it is not an individual who is caught up in his fantasy world, but an entire group—a sect, or a people, or even a nation?

Richard Koenigsberg: Shared fantasies produce psychosis which is not, however, recognized as psychosis because everyone buys into these shared fantasies which come to define "reality." 

It's happening right now. You are looking at a television or computer screen, becoming acclimated to psychotic chatter, and before long are persuaded that what you see and hear is "reality."

Your mind has been seized and captured by a grotesque dream that everyone is experiencing at once.