Those who have not read history well shud remember that Bengalis gave maximum blood in freedom struggle. In return, Britishers moved the capital from Calcutta to Delhi.
People who thinks Ray sold poverty have negative and imaginary IQ. Be content with Suraj Barjatiya et. all selling India's prosperity to west.
Bengali's are not over obsessive about their identities. That is why you won't find strong language based regionalism as in MH or TN. But Bengalis have deep rooted values. Remember it is the language that created Bangladesh (tussle between Urdu and Bangla) - have you ever seen a stronger force that broke the even the bond of Islam?