"Remembering #Nirbhaya on the 5th anniversary of brutal Delhi incident. We cannot compensate her loss but let us resolve to keep our society safe," Banerjee wrote on Twitter.
The 23-year-old woman was gang-raped on December 16, 2012 in a moving bus in Delhi, and later died in hospital.
The incident triggered outrage and protests across the country, and she subsequently came to be known as 'Nirbhaya', the fearless.