What is the importance of public opinion? Name the agencies that are helpful in the formation of public opinion?

Public opinion contributes a lot to the development of social life. It does not allow the government to be absolute. The views, interests and aspirations of the people constitute the core of the democratic system. Public opinion ensures democratic communications. The following agencies are helpful in the formation of public opinion, press, radio, television, cinema, political parties and election. Mass media plays a crucial role in reflecting public opinion. Freedom of expression can be made by all classes of people whether rich or poor through these agencies.