An interesting read.

https://cdn.centerforinquiry.org/wp-content/uploads/sites/29/1997/05/22165008/p29.pdf#:~:text=Sociologists%20and%20social%20psychologists%20use%20the%20termcollective%20delusion%2Cormass,that%20occur%20in%20an%20organized%20or%20ritualistic%20manner.