The dispute between Amazon and Hachette – and by extension a growing group of writers campaigning under the banner of Authors United – continues. The latest authors to sign up to protest Amazon’s decision to bar pre-orders of Hachette books while ditching its traditional discounts on many of its titles include Philip Roth, Salman Rushdie, V.S. Naipaul and Ursula Le Guin. “Amazon is using censorship to gain total market control so they can dictate to publishers what they can publish, to authors what they can write, to readers what they can buy,” said Le Guin. “This is more than unjustifiable, it is intolerable.” The Authors United campaign is drafting a letter to the US Justice Department asking for an antitrust investigation into Amazon, according to the New York Times. “If Amazon is not stopped, we are facing the end of literary culture in America,” said agent Andrew Wylie, who has been drumming up support for the campaign.