Depends. Contrary to the common belief Bengalis are actually quite aggressive people, just look at our bloody (literally) and violent political scene. or the naxal movement, Bengalis can group around a 'valid cause',
as identified by the people with leadership qualities and a following, and fight for it, independence of India was certainly one such valid cause, 'samyavad' was one such cause for many Bengalis...but fighting on communal lines isn't perceived as one such cause. So, I am not sure if we will fight or we will advocate a further division of Bengal if it ever comes to that. As of now, Bengalis don't talk about it in open forums as it is perceived as 'uncool' and brings down the social and intelligent quotient of the individual in the social groups, though there is a slow change in recent times as the threat of the radical elements are becoming evident.
Which incident in Kolkata you are mentioning, the last one that happened a few months back over that train incident at Sealdah?
No, local Bengali media actually suppresses all communal incidents in Bengal, otherwise communal incidents in Bengal are among the highest in India, and it is rising since TMC came to power. Many major incidents like the Canning riots got reported in English media, but local media barely reported it.
Then we need to form a new party.