KOLKATA, Jan. 9 -- "IF needed, I will fight alone," a livid Mamata Banerjee declared on Thursday in the West Bengal Assembly where she said she will boycott a meeting called by Congress interim president Sonia Gandhi on January 13 over campus violence and the CAA, exposing the opposition faultlines on the issues.

Banerjee, also the TMC president, was angry over incidents of violence in her state during a trade union strike called by organisations affiliated to the Left and the Congress over "anti-people" policies, including economic measures and livewire issues like the new citizenship law and a pan-India NRC.

"I have decided to boycott the meeting convened by Sonia Gandhi on January 13 in New Delhi as I do not support the violence that t...