To understand the phenomenon, we must break down the linguistics.
These groups use coded language. They rarely use the word "Chikan" in the public description. Instead, they use euphemisms like "street fashion enthusiasts," "public photography club," or "crowd dynamics observers."
Facebook’s real-name culture (even when fake profiles are used) creates a sense of "reality." For members of a , the thrill is twofold: first, the content itself, and second, the risk of getting caught. Facebook’s algorithm is reactive, not proactive. Unless a group is mass-reported, it can thrive for months.