The BJP in Kolkata on Wednesday hit the streets demanding the resignation of Trinamool Congress lawmakers and ministers who were allegedly seen on tape accepting bribes for favours. The Narada sting was released just before the assembly elections in West Bengal last year but last week the Calcutta High Court said prima facie it seemed to be a cognizable offence and ordered the CBI to investigate. The Supreme Court agreed with the High Court after leaders of Mamata Banerjee's party appealed against the move.