That article does talk much about why indegnious people are backward,supresed and very poor as you said earlier.It said that indeginous people were not supposed to talk about ethnic group and could not represent in the national politics in their ethnic names.during panchayat regime,They could not demand for linguistic freedom nor could they talk about secularism. The state policy throughout the panchayat rule was monolithic and only the constitution of 1991 admitted nepal as as multi-ethnic, multi-cultural and multi-lingual country.Since common culture was thought essential for nation-building, monolithic policies for one nation, one language, one religion and one culture was officially promoted giving special privilege to Khasa Nepali language and Parbatiya Hindu culture as national. During the panchayat regime, debates and efforts pertaining to ethnicity and cultures other than "national" culture was discouraged as communal and anti-national and therefore met with strong official oppositions. Indigenous peoples have multiple issues of development. They have issues of land, languages, citizenship certificates, health, education, employment etc. Up to 95 percent of the highly marginalized indigenous peoples like Chepang, Santhal, Kisan, Jhagad, Munda, are landless peoples. They erect small huts either along the roadsides or at marginal public lands. Without lands, they cannot have their citizenship certificates and without citizenship certificates, indigenous peoples cannot have access even to the basic social facilities of health and education. The national census report shows that 0.74 million or 18% of the total school going age children are out of school and the majority of them come from indigenous communities. The failure and school drop out rates are also highest among indigenous peoples. This is attributed to the poverty of the parents and language in the schools. So indigenous peoples are also demanding special programs to eradicate poverty. They demand multicultural educational environment focusing particularly education in mother languages I found this article pretty interesting and found they are much vulenrable from everywhere as you said religous changes. I didn't copy and paste most of them because i am feeling lazy.... The first and the second are the same article, one in HTML and other in PDF.