order was revived when 11 Sri Lankan women received full ordination in Sarnath, India, in a procedure held by Ven. Dodangoda Revata Mahāthera and the late Ven. Mapalagama Vipulasāra Mahāthera of the Mahābodhi Society in India with assistance from monks and nuns of Korean Chogyo order. Some bhikkhuni ordinations were carried out with the assistance of nuns from the East Asian tradition; others were carried out by the Theravada monk's Order alone. Since 2005, many ordination ceremonies for women have been organized by the head of the Dambulla chapter of the Siyam Nikaya in Sri Lanka. Buddhist organizations Monastic groups The different sects of the Sri Lankan (Sinhala) Buddhist sangha are referred to as Nikayas. There are currently two main Nikayas on the island: Siam Nikaya, founded in the 18th century by monks from Thailand. This Nikaya only allows higher ordination from the Radala and Govigama castes. They maintain the Temple of the Tooth in Kandy. Amarapura-Rāmañña Nikāya – Formed in 2019 as a merger of the Amarapura Nikaya (founded in 1800 through Burmese monastics) and the Rāmañña Nikaya (founded in 1864). It is the largest Nikaya on the island. This tradition allows all to ordain as monks, regardless of caste. There are numerous sub-divisions in these main ordination lineages. Other organizations Besides the monastic fraternities, there are various Buddhist institutions and organizations in Sri Lanka. Some of these include: Young Men's Buddhist Association, a Buddhist version of the YMCA All Ceylon Buddhist Women's Association Sri Lanka Maha Bodhi Society with close ties to the Indian Buddhist sites. Buddhist Publication Society, which publishes Buddhist literature in English and Sinhala. The Buddhist (TV channel) The Sarvodaya Shramadana Movement of A. T. Ariyaratne, a welfare and conflict resolution organization. Sarvodaya Shanthi Sena Sandasaya or Shanthi Sena (Peace Brigade), an organization focused on peace work founded by A. T. Ariyaratne Jathika Hela Urumaya, a nationalist political party which includes Buddhist monks in its ranks. Bodu Bala Sena, (Buddhist Power Force or BBS), a Sinhalese nationalist organization known to perpetrate attacks on Sri Lankan Muslims. It has been called an extremist group by Sri Lankan politicians like Mangala Samaraweera and Vasudeva Nanayakkara. Demographics Buddhism in Sri Lanka is predominantly practised by the Sinhalese people, however the 2012 Sri Lanka Census revealed a Buddhist population of 22,254 amongst the Sri Lankan Tamil population, including eleven monks, accounting to roughly 8% of all Sri Lankan Tamils