The de facto policies of preference that the Sri Lankan government adopted in order to assist the Sinhalese community in such areas as education and public employment affected most severely middle class Tamil youth, who found it more difficult during the 1970s and 1980s to enter a university or secure employment than had their older brothers and sisters. Individuals belonging to this younger generation, often referred to by other Tamils as "the boys," formed the core of an extremist movement that had become, by the late 1980s, one of the world's most violent. By the end of 1987, they fought not only the Sri Lankan security forces but also the armed might of the (Indian Peacekeeping Force) and terrorized both Sinhalese and Tamil civilians with acts of random violence. They also fought among each other with equal if not greater brutality (see The Tamil Insurgency , ch. 5).

In a sense, the militant movement was not only a revolt against the Sinhalese-dominated status quo but also an expression of intergenerational tensions in a highly traditional society where obedience to parental authority had long been sacrosanct. Militant youth criticized their elders for indecisiveness at a time when they felt the existence of their ethnic community clearly was in danger. The movement also reflected caste differences and rivalries. The membership of the largest and most important extremist group, for example, the Liberation Tigers of Tamil Eelam (LTTE), was generally drawn from the Karava or fisherman caste, while individuals belonging to the elite Vellala caste were found in considerable numbers in a rival group, the People's Liberation Organization of Tamil Eelam (PLOTE, also PLOT).

Data as of October 1988