He also accused her of nepotism by choosing to play the limited role of bua (aunt) to her bhatija (nephew) instead of becoming Didi (elder sister) to the people.
Addressing a BJP rally at the Brigade Parade Grounds, his first in West Bengal after the announcement of assembly polls, Modi hit out at his detractors who accuse him of favouring a handful of his businessmen friends.
“You have betrayed and insulted the people of Bengal who trusted that you will be the harbinger of change after the end of the Left rule. You smashed to smithereens (chaknachoor) their hopes and dreams,” he said, excoriating the TMC supremo.
He alleged Banerjee promoted nepotism while neglecting the people who fondly called her Didi. “Bengal chose you in role of Didi but you preferred being bua to your bhatija,” he said.
The BJP has been accusing Banerjee of trying to install her nephew and Diamond Harbour MP Abhishek as the next chief minister. Hitting back at rival leaders like former Congress president Rahul Gandhi and Banerjee, who often accuse him of favouring his industrialist friends, Modi said given his humble background he valued friendship.
Yesteryear Bollywood heartthrob Mithun Chakraborty on Sunday joined the BJP at Brigade Parade Ground ahead of Prime Minister Narendra Modi's mega rally.
Chakraborty said he had always wanted to work for the underprivileged, and the saffron camp has given him a platform to fulfil his aspiration. Amid huge cheers from supporters, Chakraborty, borrowing a dialogue from one of his films, said, “Ami joldhorao noi, bele borao noi... ami ekta cobra, ek chobol-ei chobi (Don’t mistake me for a harmless snake, I am a cobra, can kill people with one bite).”
 "Mithun Chakraborty, BJP, narendra modi")