India, July 21 -- Trinamool Congress (TMC) chief Mamata Banerjee on Monday told party leaders to launch a year-long movement against detention of Bengali-speaking migrant workers in Bharatiya Janata Party-ruled states (BJP) on charges that they were illegal Bangladeshi immigrants.

"Today I lay the foundation stone of our fight to uproot the government at the Centre. Nobody can stop TMC. I will not tolerate the insult of Bengali or any other language," Banerjee said at her party's mammoth annual rally to pay homage to the 13 youth Congress workers killed in police firing in Kolkata on July 21, 1993. Banerjee, who was the state youth Congress president at that time, formed the TMC in 1998.

Banerjee announced the launch of a "Bhasha andola...