The Assam Movement (or Assam Agitation) (1979-1985) was a popular movement against undocumented immigrants in Assam. The movement, led by All Assam Students Union (AASU) and the 'All Assam Gana Sangram Parishad' (AAGSP), developed a program of protests and demonstration to compel the government to identify and expel illegal immigrants. The agitation programs were largely non-violent, but the Nellie massacre was a case of extreme violence. The agitation program ended in August 1985 following the Assam Accord, which was signed by leaders of AASU-AAGSP and the Government of India.