It is often conforting to belong to a tribe. Following the dress, ritual and social norms of the tribe is not only necessary for membership but often serves as a support and foundation for one's own life. It doesn't matter if the tribe is a group of Ultra-Orthodox Satmars or a group of Ultra-Hip teens from North Tel Aviv.
Justice Ministry: Information examined by AG about Gal Hirsch didn't come from police (Haaretz)
from the article: The ultra-Orthodox arrived en masse