Tagin people
The Tagins are one of the major tribes of Arunachal Pradesh, India, a member of the larger designation of Tani Tribes. The Tagins refers to a tribe of Northeast India Region. The Tagins are members of the larger designation of Abotani (abo - 'father', tani - 'ancestor's name'). The Tagins are generally adherents of Donyi Poloism religion. Distribution
Tagins are the dominant tribe in  Upper Subansiri district. They are also found dispersed in the adjoining districts, especially in West Siang, Papum Pare, in Arunachal Pradesh, as well as some areas of Tibet adjacent to Arunachal Pradesh. Since China took away some of the Arunchal area after the 1962 Sino-Indian War, there are Tagins present in Tibet who are included under Lhoba people. Population 
According to 2011 census there are 68,534 Tagin people in India. A few thousand in Tibet is expected. There are many clans among the Tagins, for example, Duchok, Mosing-Mosu, Tamin (Nakam, Nayam, Neva, Negia Nutik, Mindi (Nasi & Nalo) and Japo), Leyu, Reri, Natam-Gyadu (Bagang), Nah, Gyama, Tache-Tagia, Tasi, Dui, Topo, Tani-Tator, Cherom-Chera, Buning, Heche, Kodak-Konia, Nalo, Pombu, Bagang (Nacho, Naji, Singming, etc. ), Aiyeng (Payeng), Paji, Gumsing, Kojum Abu, among others. Language 
Tagin people speak their own local dialect which is Tagin. Although there are tonal variations among them, these variations causes no hurdle in understanding each other. Religion
Originally the traditional Si-Donyism as a religion was being followed all around. Si-Dyoni derives from ‘Si’ ('Earth'), and ‘Dyoni’ ('Sun'), which follows the cult of animism and ritualistic nature worshiping (similar to Sanatan culture) in the form of spiritual deities where particular kind of animals or chickens are sacrificed at the altar (yogging-made out of the bamboos and wooden leaves with particular leaves or vines in stuffed shape) to please the spirits (very close to tamasic ways of Hinduism), more likely not anger them and keep them in their kind form. Priest or Nyibu shaman who are born with their powers are the ones who communicate and negotiate between the other world. They are the in-between messenger from this world to other world. Recent years have seen mass conversions among members of the local community into Christianity, which has intensified Western influx in the culture, with more and more of the people embracing Western culture. Sadly this has led them to leave donyi-polo and it's tradition, culture, and even the dialect. Festivals
The most important festival of the Tagins is the Si-Donyi Festival, which involves the god of the earth (si) and the goddess of sun (donyi). Si-Donyi is celebrated from 3 to 6 January every year. It is celebrated for the well-being  of mankind with the coming new year where the nyibu (local priest) presides over and performs all the rituals with chanting of Uuyu Benam (celestial chants). And sacrifice of Mithuns before the god-goddess for peace and prosperity in the community as a whole. Organisations 
Tagin Cultural Society (TCS) and Tagin Welfare Society (TWS) are the main parental organisation of the tribe. There are also youth/student groups called All Tagin Students Union (ATSU) and All Tagin Youth Organisation (ATYO). The TWS or TCS also have many subgroups, and have been helping in shaping the future of the state. 