media is a private corp. they can say whatever they want. true or untrue. that is their right and freedom. How is it you are so smart and can see the propaganda but everybody else just watches and blindly believes? What do you want the government to do about it?
These are actually very good questions.
One problem obviously is that many, indeed most, potential voters lack the interest or time to pursue issues deeply. They tend to form a generalized belief by their exposure to bits and pieces of information in the media. In short, they are highly vulnerable to propaganda masquerading as news. They tend to be either trusting, eg older people, or naïve, eg millenials, and don't think to question why shittalking by Trump 20 years ago is more important than an FBI investigation being rigged to clear Hillary of serious national security offenses.
While the media are nominally private, there are only three major TV networks, two or three important newspapers and three cable TV nets. Other than Fox News, all are very liberal in the best of times and have clearly been totally in the tank for Hillary. Fox itself has violated its viewers trust by attacking Trump relentlessly, both on air and in the debate it hosted.
There is one change that could be made to improve matters slightly. Under current libel laws, the media get special permission to libel people who are deemed public figures unless actual malice is shown. Given the obvious coordination between reporters and the Clinton campaign, Trump may be able to show actual malice in some of the false reports about him, but generally it is an impossible burden. The UK has no such rule and manages to boast a press that is far more robust than ours.
Democrats desperately want to do two things, both of which are very bad ideas. One, they want to reinstate the misnamed "fairness doctrine" under which broadcasters are forced to give equal time to opposing viewpoints. In practice however, it was only used to silence conservative opinion shows, while biased "news" reporting was not challenged. Two, they want to regulate the internet. Obama was whining the other day about the need to censor "incorrect" information, like maybe AGW skepticism or criticism of immigration.