Pressure groups and movements exert influence in a variety of ways. (i) They try to win public support and sympathy for their goals and activities by carrying out information campaigns, organising meetings, filing petitions etc. They also make use of media. (ii) They often organise protest activities like strikes or disrupting government programmes. Workers ‘organisations, employees’ associations etc. often resort to these tactics in order to force the government to take note of theirdemands. (iii) Business groups often employ professional lobbyists or sponsor expensive advertisements. Some persons from pressure groups or movement groups may participate in official bodies and communities that offer advice to the government. (iv) Sometimes political parties grow out of movements. For example, when the Assam movement led by students against the ‘Foreignness’ came to an end,it led to the formation of the Asom Gana Parishad. The roots of the parties like the DMK and the AIADMK in Tamil Nadu can be traced to a long drawn social reform movement during the 1930s and 1940s.