Well yes, I agree that the media are not fair and balanced. The media, however, has many forms -- TV networks, cable TV shows, radio, newspapers, mail, e-mail, countless internet websites -- Facebook, Twitter, blogs, and more. Most young people get their "news" and "fake news" (if you can call it that) from browsing websites on their cellphones.
The First Amendment allows for all that: facts and fiction, truths and untruths, as long as someone isn't slandered, and even then, hard to prove in lawsuits.
The indoctrination comes from people choosing their media sources and not showing any curiosity about "alternative views or facts". They choose their like-minded friends and shut out the "other".
This is where various cognitive biases can be applied by psychologists -- there's a long list of them on Wikipedia. I don't pretend to know which ones apply. But being rather old-fashioned, I'm sure you'll agree that repetition of lies leads it to become fact in a person's mind. That's why we have the same endless mindless TV commercials repeated over and over again. Oh, and then there is this famous quote:
“If you repeat a lie often enough, people will believe it, and you will even come to believe it yourself.” -- Joseph Goebbels, Reich Minister of Propaganda of Nazi Germany.
I think Trump actually believes his own lies.