In agreement with all previous posts, I'd like to add a couple of things.
The power of the media is equivalent to the power of the printed word prior to new, sophisticated technologies such as the Internet, smartphones, and others. People -not just youngsters- have always tended to believe that what appears in print is true. This has simply spread to the present means of communication.
This could be counteracted in two ways. On the one hand, schools can use such means in class and guide students to compare and contrast how different media deal with the same item of news. Thus the vested interested and bias of the media would become apparent, and students would learn to read between the lines and listen beyond the words.
On the other hand, if parents took the time to watch TV or visit the Internet with their offspring -I know some do- they could point out to subliminal or underlying purposes that escape very young people. This calls for responsible, informed parents. The danger lies in parents who have, to a certain extent, been "brainwashed" themselves.
Parenting does not come to us naturally. Seminars, courses, and group activities conducted by trained professionals can help break a vicious circle. We talk of the media as a distraction. That's the underside. Yet the media can well be turned into educational tools if wisely used.
Regardless of their age, people need encouragement to question and put to the test everything that is not a well-proven scientific truth. Of course, it is much easier to accept media proposals and move on. More emphasis on intellectual honesty and curiosity might yield a completely different picture.