Ideally news media should play the role of "watchdog" but in reality news media seldom perform their duties faithfully. This paper tries to explain the gap between ideals and reality of news media's role in a democratic society. The author finds that almost all news media try to be independent and objective as possible as they can, hoping that in doing so they can make more money. As a matter of fact, what people need in a democratic society is not detached news media but civic engagement. This paper suggests that new technologies provide opportunities for the news media to re-define their role in accordance with needs which may arise in a democratic society. For example, news media should change their role from content provider to facilitator of public debates. If they do so, they will not only secure people’s trust but can also survive the challenge of the digital age.