The incident, captured on video, shows DMK councillor Sudha Dheenadayalan using profanity and calling Chief Minister Vijay K. S. a "dog" during a public rally in Chennai, prompting police action.
The clip also shows Dheenadayalan comparing Vijay's appearance to that of DMK leader MK Stalin, sparking outrage within the party.
DMK parliamentary leader MK Kanimozhi, visibly uncomfortable, later shared a video of her urging Dheenadayalan to maintain decorum, while other party members called for swift disciplinary measures.
Industries Minister Keerthana criticized the remarks and demanded that the incident be treated as a political insult, calling for the speaker to be held accountable.
Chennai Police registered a case under Section 294 of the Indian Penal Code for obscene language, and the matter has been forwarded to the Subordinate Court for adjudication.
The episode follows a prior confrontation in the Tamil Nadu Assembly where Vijay's gestures were interpreted as body‑shaming, and it has reignited calls for political parties to curb personal attacks.