Media tends to repeat representations of people that compile our viewpoint of this group of people.
They change our perceptions about things. which demographic is dominant and which is not
Media has a gradual effects on the audience.. and overtime this influences your world view.
Your sense of reality becomes distorted by the media
People can become more and more paranoid the more that they consume negative news stories. They begin to cultivate an idea that the world around them is dangerous and that they are under threat.