Trump civics: press enemy of the people?

Trump tweeted:

The FAKE NEWS media (failing @nytimes, @NBCNews, @ABC, @CBS, @CNN) is not my enemy, it is the enemy of the American People!

— Donald J. Trump (@realDonaldTrump) February 17, 2017

JFK responds with a basic lesson in civics:

JFK on the press, and the presidency, in a free society. Watch. pic.twitter.com/dsr61wEeo4

— Bradd Jaffy (@BraddJaffy) February 18, 2017

Or in text:

It is never pleasant to be reading things frequently that are not agreeable news,but I would say it is invaluable arm of the presidency as a check really on what is going on in administration.
...
Even though we never like it, and even though we wish they didn’t write it, and even though we disapprove, there isn’t any doubt that we could not to the job at all in a free society without a very, very active press.