If an assembly was lawful at the beginning but later adopted a common object falling under Section 189(1) BNS, what is its legal status?

This answer is based on the Explanation attached to Section 189 of the BNS (which corresponds to Section 141 of the old IPC). 1. The Statutory Provision (Section 189 BNS) Section 189 defines "Unlawful Assembly" as an assembly of five or more persons if the common object of the persons composing that assembly is one of the five illegal objects listed (e.g., to overawe the government, resist legal process, commit mischief, etc.). 2. The Critical Explanation The section includes a specific explanation that addresses the dynamic nature of assemblies. It states: "An assembly which was not unlawful when it assembled, may subsequently become an unlawful assembly ." 3. Legal Status Analysis

• Initial Status: The assembly may start with a lawful purpose (e.g., a peaceful protest or a religious procession).
• Change in Status: If, during the course of the assembly, the members (being five or more) develop a common object falling under the prohibited categories of Section 189(1), the assembly transforms into an unlawful one.
• Timing: The illegality attaches the moment the common object shifts to an unlawful one, regardless of how it started. No formal declaration by a Magistrate is required for the status to change legally; the change in object is sufficient.

Summary