West Bengal's fractured political landscape faces another flashpoint on 28 August as both factions of the All India Trinamool Congress (TMC) prepare to separately celebrate the Trinamool Congress Chhatra Parishad (TMCP) Foundation Day in Kolkata — the latest episode in an intensifying battle over who controls the 'real Trinamool' following a party rebellion after the May 2025 state election results. The split, which has cleaved the party into two distinct camps in the state Assembly, is now being waged on the streets, in institutions, and over the loyalty of student activists.

Two Factions, Two Claims to Legitimacy

On one side stands the Kalighat faction, anchored in the personal legacy and founding authority of Trinamool Congress Chairperson Mamata Banerjee. Her camp draws on the party's origin story — from fiery street protests against the Left Front through to her historic 2011 electoral triumph — and on a leadership model that is deeply centralised, with key decisions flowing from her residence in Kalighat. Supporters of this faction argue that Assembly seat counts cannot erase the emotional and historical legitimacy that Mamata embodies.

On the other side is the faction led by Ritabrata Banerjee, which has secured institutional recognition by earning him the designation of Leader of Opposition in the West Bengal Legislative Assembly, reportedly backed by close to 60 MLAs. His camp includes leaders once considered part of Mamata's inner circle — among them Firhad Hakim, Madan Mitra, Anubrata Mondal, and Javed Khan — whose defection has lent the faction both organisational muscle and crowd-mobilisation capacity.

July 21 Rehearsal: Parallel Rallies on Martyrs' Day

The current standoff has a clear precedent. On 21 July — Trinamool's annual Martyrs' Day, commemorating the 1993 police firing on Youth Congress activists then led by Mamata Banerjee — both factions held separate rallies in Kolkata simultaneously. Ritabrata's group organised a parallel gathering at Mayo Road, approximately three kilometres from Mamata's event at Birla Planetarium. Reports indicated that both rallies drew significant crowds, with the spectacle of twin rival Trinamool events on the same day underscoring the depth of the rupture.

Friday's TMCP Foundation Day is shaping up as a near-identical contest, with each side expected to demonstrate its mobilisation strength through crowd turnout and the tenor of its speeches — metrics that politicians and analysts will scrutinise closely.

Why the Student Wing Is the Real Prize

Control of the TMCP carries stakes well beyond symbolism. The student wing commands loyalty across college and university unions in West Bengal, making it a critical pipeline for ground-level political workers and future leadership. Whichever faction secures dominance over TMCP will not only inherit that activist base but will also be positioned to shape the ideological narrative of what 'real Trinamool' stands for. This is the faction's claim to the future, not just the past.

The Shiv Sena Parallel — and What Comes Next

Analysts have drawn comparisons to the Shiv Sena split in Maharashtra, where the Election Commission of India (ECI) and courts ultimately adjudicated which faction held the original party's name and symbol. In West Bengal, a similar institutional reckoning may await. For now, however, the contest is being played out through rallies, Assembly arithmetic, and symbolic ownership of dates that carry deep political memory.

As both factions gear up for 28 August, the outcome of Friday's mobilisation contest will not resolve the legitimacy question — but it will sharpen the narrative each side takes into whatever institutional arena comes next.