How did the Tamilians shows their oppose on the law of 1956?

The Sri Lankan Tamils launched parties and struggles for the recognition of Tamil as an official language, for regional autonomy and equality of opportunity in securing education and jobs. But their demand for more autonomy to provinces populated by the Tamils was repeatedly denied. By1980s several political organisations were formed demanding an independent Tamil Eelam (state) in northern and eastern parts of Sri Lanka.