Majoritarianism in Sri Lanka
Sinhala was in majority in Sri Lanka. After Sri Lanka got independence, an act was passed in 1956 to recognise Sinhala as the official language. The policies of the government were in favour of the Sinhala people.
Thus, Tamilians felt disregarded and thought no political parties led by the Sinhala leaders were sensitive to their language and culture. They established political parties and struggled for the recognition of Tamil as the official language. Soon a civil war broke out between the two which ended in 2009.