The three largest newspapers in Northern Ireland - The Belfast Telegraph, the Belfast Newsletter and the Irish News - have published a letter condemning threats issued by loyalists and dissident republicans against journalists.
The public statement declaring support for press freedom in Northern Ireland was published following a loyalist threat to all journalists working at the Sunday Life and Sunday World and a recent threat by dissident republicans to an Irish News journalist.
The statement has been signed by First Minister Arlene Foster, Deputy First Minster Michelle O'Neill, UK Culture Secretary Oliver Dowden and Northern Ireland Secretary Brandon Lewis.
The majority of MLAs from the Northern Ireland Assembly have also endorsed the message, as have trade union, industry, community and religious leaders.
Under the banner "Stand Up for Journalism", the public statement asserts the right of reporters to work without threats, intimidation or harassment.
NUJ Assistant General Secretary Seamus Dooley said: "In the past, the trade union movement took to the streets in protest against the threats to workers.
"In the difficult circumstances in which we find ourselves today, we rely on newspapers to highlight the threats to journalists.
"By working with the publishers and our members affected, we have been able to secure the support of a cross-section of society in Northern Ireland.
"We warmly welcome the strong stand taken by political and community leaders and look forward to a renewed drive to ensure journalists can safely carry out their work on behalf of the public."
Editor of Sunday Life Martin Breen said "enough is enough".
"Some 26 years after the ceasefires, terrorist organisations from both the loyalist and republican side are continuing to threaten journalists on an ongoing basis because we have been exposing their dirty deeds and criminal empires," he said.
"We all have to stand up against these vile threats as their sole aim is to silence investigative journalism and curtail the public's right to know about those gangsters operating in their communities across Northern Ireland.
"We hold everyone to account and will continue to expose criminality and all wrongdoing no matter where it originates."
Sunday World editor Brian Farrell said: "The recent threats issued to our journalists only serves to highlight the risk and importance of exposing the criminal menace that plagues our society.
"We will not be silenced nor intimidated and will not rest until those responsible are brought to justice."
Noel Doran, Irish News editor, said: "The increase in the number of serious threats against Belfast-based journalists is a deeply alarming development, so the significant level of support behind today's initiative is heartening.
"It sends out a strong message that all the attempts at intimidation will have no effect on our coverage, that the perpetrators need to be robustly pursued by the authorities and that civil society is firmly behind freedom of the press."