Alright, fuck it. I'll bite.
The "mainstream media" is a series of corporately-owned news agencies who have survived solely on the accuracy of their reporting. ABC is owned by Disney. CNN by Ted Turner. NBC by Universal. CBS by Viacom. And so on. The New York Times and Washington Post are independently owned, and have existed for like 120 years.
If a reporter was to publish a "fake" story, they'd be fired. If an editor was to let a fake story through, they'd be fired. It has happened, and those people have been fired.
Journalists have built their careers and reputations on accurate reporting. The editorial boards of those press organizations exist to ensure the integrity of the reporting.
This whole "fake news" phenomenon is the GOP seizing on a phrase coined by BuzzFeed, which reported on a number of Macedonian teenagers pumping deliberately fabricated stories (that supported Trump) onto Facebook in order to collect money from ad revenue:
https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjBotfUie7SAhVI1hQKHdqLBs8QFggcMAA&url=https://www.buzzfeed.com/craigsilverman/how-macedonia-became-a-global-hub-for-pro-trump-misinfo&usg=AFQjCNFVKEAzHfyll8HzP4VIt1IZI5guZg&sig2=CEElQcM6Jst3Q61yvRcTbQ
Trump now calling the mainstream media fake news is moronic. He calls stories that paint him in a bad light, and that are accurate, "fake news". People like you buying it and perpetuating it are idiots.
The mainstream media has existed, and will continue to exist, because it forces the government to be transparent.
I know you think you're smarter than everyone; that you know a "secret" we're all not privy to. The "MSM" is all shills and lies and your unchecked, un-reviewed, unaccountable "news" sources are reliable, despite having no established track record of credibility.
Stop being 12, and enter the real world.