After the Assam riots in 2012 , an SMS hate campaign was launched in the South of India threatening people from the North-East with retribution , particularly after Ramzan . Investigators traced the source of these hate messages to Harkat-ul-Jihad al-Islami ( HuJI ) and the Popular Front of India , along with its affiliate organisations Manita Neeti Pasarai and Karnataka Forum for Dignity . More than 60 million messages were sent in a single day on 13 August 2012 . Some 28-30 percent of the messages were found to have been uploaded from Pakistan . The SMS campaign was designed to create a panic among the people from the North-East , forcing them to flee . This led to a mass exodus of 30,000 people from cities of Pune , Chennai , Hyderabad and national capital Delhi . Union Home Ministry banned bulk SMS , MMS for 15 days to quell rumors and threats
Assam riots in 2012
2012 Assam violence
Popular Front of India