How do pressure groups and movements exert pressure on politics?

Pressure group and movement exert pressure on politics by many ways, which are as follow: 1) They organize public meetings to gain maximum supports. 2) They organize road shows, distributes papers. 3) They take help from media in order to reach a large number of people. 4) They do hunger strike to exert pressure on political parties. 5) To gain major support from public for a particular movement, they also put up advertisement and boards every where in the city.