BJP chief Amit Shah today claimed that the perception that Bengal and the BJP are ideologically far apart is erroneous. Syama Prasad Mookerjee, the ideologue who founded the Jana Sangh - from which the BJP evolved - was the big link between the two, claimed the Union home minister during his visit to Kolkata today. Launching a scathing attack on the state's ruling Trinamool Congress, he said, "They are trying to say BJP is an outsider party, it doesn't have anything to do with Bengal".