Founded in May 1976 by Velupillai Prabhakaran, the LTTE was involved in armed clashes against the Sri Lankan government and armed forces. Oppression against Sri Lankan Tamils continued by Sinhalese mobs, notably during the 1977 anti-Tamil pogrom and the 1981 burning of the Jaffna Public Library. Following the week-long July 1983 anti-Tamil pogrom carried out by Sinhalese mobs that came to be known as Black July, the LTTE's escalation of intermittent conflict into a full-scale nationalist insurgency began, which started the Sri Lankan Civil War. By this time, the LTTE was widely regarded as the most dominant Tamil militant group in Sri Lanka and among the most feared guerrilla forces in the world, while Prabhakaran's status as a freedom guerrilla fighter led to comparisons to revolutionary Che Guevara by global media, though Prabhakaran's actions were also widely viewed as terroristic.