Hacker News with Generative AI: Social Phenomena

Dancing Mania (wikipedia.org)
Dancing mania (also known as dancing plague, choreomania, St. John's Dance, tarantism and St. Vitus' Dance) was a social phenomenon that may have had biological causes, which occurred primarily in mainland Europe between the 14th and 17th centuries.
Psychology of mass psychosis during Covid [video] (youtube.com)