An altercation broke out between Trinamool Congress leader Abhishek Banerjee and the Kolkata Police on Thursday when security personnel and officials of the municipal corporation arrived at a party office to remove a banner.A TMC worker was detained, a video posted by PTI showed.The TMC alleged that the police had “barged into” Banerjee’s office at Camac Street with what it described as an “illegal notice” to take down the banner.“Upon hearing, Mr Banerjee rushed to the spot and sought notice from the concerned govt official,” the party said. “The Kolkata Municipal representative failed to display any valid notice...”With the help of the police, the municipal officials entered the office, assaulted Banerjee and TMC MP Derek O’Brien, the party said.The official “pushed and heckled” TMC supporters and staff, the party alleged. It further alleged that the clothes of the office’s women security personnel were torn.— All India Trinamool Congress (@AITCofficial) August 27, 2026

TMC said that it will approach the court against the “brutality, harassment and illegal action/trespassing” by the police.West Bengal is “witnessing the steady erosion of constitutional governance and an alarming descent” into a police state”, Banerjee said on social media after the incident.“When the power of the state operates without constitutional restraint, the judiciary becomes the last line of defence,” he said. “If judicial intervention does not come when fundamental rights are being undermined, what is at stake is no longer merely the liberty of individuals. It is the survival of democracy itself.”Police acting on an unsigned, incomplete, error filled KMC notice illegally trespassing into a building housing a TMC office. See hrs of VIDEO PROOF of mayhem unleashed on Abhishek Banerjee, our team & I by BJP police for 3 hours+. Police atrocities on MPs & all. WE WON’T BEND.— Derek O'Brien | ডেরেক ও'ব্রায়েন (@derekobrienmp) August 27, 2026