Why is media called the fourth organ of the government

The concept of the news media or press as a fourth branch stems from a belief that the media's responsibility to inform the populace is essential to the healthy functioning of democracy.

Explanation:

It is the backbone of a democracy. Media makes us aware of various social, political and economic activities happening around the world. Media is called the fourth pillar or fourth state  due to important role of media in shaping public opinion. A democracy without media is like a vehicle without wheels.so it is called the fourth organ of the government