Jam'iyyar ta Kwaminisanci, wadda take lashe zabe tun daga shekarar 1977 a jihar ta Yammacin Bengal, na fuskantar kalubale ne mafi girma daga ’yan adawa a karkashin jagorancin Ministar Zirga-zirgar Jiragen Kasa ta Indiya, Mamata Banerjee.
