Many Muslims from erstwhile East Bengal settled in Assam in early 20th century. But vested interests are out to prove that their descendants today are illegal migrants
http://www.sacw.net/article2777.html
Resources for all concerned with culture of authoritarianism in society, banalisation of communalism, (also chauvinism, parochialism and identity politics) rise of the far right in India (and with occasional information on other countries of South Asia and beyond)