1 of 3 | A coalition of journalists are calling on the White House Correspondents’ Association to push back on President Donald Trump’s attacks on the press ahead of his attendance at Saturday’s correspondents’ dinner. Photo by Graeme Sloan/UPI | License Photo

April 20 (UPI) -- A coalition of journalists called on the White House Correspondents' Association to push back on President Donald Trump's attacks on the press ahead of his attendance at Saturday's correspondents' dinner.

Several national journalists' organizations, including the Society of Professional Journalists and the National Association of Black Journalists, have signed a letter urging the association to show opposition to Trump's attacks on the free press, some of which are outlined in the letter.

More than 250 former broadcast journalists also signed the letter, including Ann Curry, Dan Rather and Sam Donaldson.

"We, the undersigned, call upon the White House Correspondents' Association to use the occasion of the White House Correspondents' Dinner to forcefully demonstrate opposition to President Trump's efforts to trample freedom of the press," the letter reads.