Bengal Congress Invites Mamata to Martyrs’ Day, Questions Her 1997 Exit The West Bengal Congress has invited Trinamool Congress chairperson and former chief minister Mamata Banerjee to its July 21 Martyrs’ Day programme at Shahid Minar in Kolkata. However, state Congress president Subhankar Sarkar said Banerjee should acknowledge that leaving the Congress nearly three decades ago was a political mista