Trinamool Congress chief Mamata Banerjee today accused the BJP of pursuing political vendetta by "using" the CBI and said the party will hit the streets in protest if the investigating agency arrests Mukul Roy. br br "Our leader (Mamata) has told us if they (CBI) arrest Mukul (Roy), lakhs of Mukuls will hit the streets in protest of the political vendetta that BJP is pursuing by using the CBI," a leader quoted the West Bengal chief minister as saying.