In response to The Boston Globe's request, more than 300 news outlets across the USA, along with a few worldwide publications, printed editorials promoting the free press with many using the hashtag #EnemyofNone.
"The greatness of America is dependent on the role of a free press to speak the truth to the powerful", the Globe's editorial said.
"Unable to carry on in the light, the president attempts to drag us all into a dark labyrinth where rules don't apply and some vacant concept of winning seems attainable", said the Record-Journal in Meriden, Connecticut.
The president even admitted in a tweet in May 2018 that he considered any negative news regarding his person or administration "fake news".
On Thursday morning, Trump again took to Twitter to denounce "fake news".
Some newspapers used history lessons to state their case.
Trump has stated a number of times that he believes the media covers him unfairly, often characterizing news organizations as "fake news" and journalists as his true political opponents.
Willian enjoying Chelsea's 'Samba style' under Maurizio Sarri
The Frenchman added: "Now the system is something different, especially the way we play now". This is what we will try to do this season".
"Praise them when you think they've done a good job and criticise them when you think they could do better".
That last sentiment made some journalists skittish.
The Republican president's comments reflect a view held by many conservatives that most newspapers and other news outlets distort, make up or omit facts because of a bias against them. "The damage to our standing is self-inflicted".
The Radio Television Digital News Association, which represents more than 1,200 broadcasters and websites, is also asking its members to point out that journalists are friends and neighbours doing important work holding government accountable.
"I want to make sure that it is positive", said Dan Shelley, the group's executive director.
It remains unclear how much sway the effort will have.