WHEN it started out, the Shiv Sena and its union, the Bharatiya Kamgar Sena (BKS), in particular were better known as strike-breakers than friends of the working class. The BKS was often used by managements to neutralise the influ-ence of the Left unions. Today, the union has emerged as a powerful outfit in the state and exerts its dominance in areas which were once CPI-CPI(M) citadels.