Ever since the Lok Sabha election, that saw the Mamata Banerjee-led Trinamool Congress (TMC) concede political space to the surging Bhatariya Janata Party (BJP) which increased its tally from a mere two seats to 18 in the state, Bengal, particularly rural Bengal is in a grip of spiralling political violence. District after district, especially those close to the India-Bangladesh border, have over the last weekend witnessed a see-saw of pitched battle between supporters of TMC and BJP, leaving at least four dead—three from the BJP and one from Mamata's TMC.