On the same morning some 300 newspapers came together to defend the free press, US President Donald Trump tweeted that the “fake news media” are the “opposition party”.

The editorial campaign was spearheaded by the Boston Globe, with papers addressing attacks on the media from Trump – including that they are the “enemies of the American people” – in leader and opinion columns.

Trump took to Twitter to respond to the editorials on Thursday morning, tweeting that the Globe is “in collusion with other papers on free press” and that many of the media are “pushing a political agenda.”