Richard Seymour (born 1977) is a Northern Irish author, commentator and owner of the blog Lenin's Tomb. His books included The Meaning of David Cameron (2010), Unhitched (2013), Against Austerity (2014) and Corbyn: The Strange Rebirth of Radical Politics (2016). Seymour was born in Ballymena, Northern Ireland to a Protestant family,^[1] and currently lives in London. A former member of the Socialist Workers Party,^[2] he left the organisation in March 2013. He completed his PhD in sociology at the London School of Economics under the supervision of Paul Gilroy.^[3] His thesis, dated 2016, was titled Cold War anticommunism and the defence of white supremacy in the southern United States.^[4] In the past he has written for publications such as The Guardian and Jacobin.

Seymour's first book was The Liberal Defence of Murder published in 2008. Owen Hatherley gave a positive review in the New Statesman.^[22] A review in Independent on Sunday by the policy director of Save the Children described the book as "timely, provocative and thought-provoking".^[23] A review in The Times praised the book as a "powerful counter-blast against the monstrous regiment of 'useful idiots'".^[24] A review in the Journal of American Studies commended the book's "truly impressive breadth and depth".^[25]

In contrast, columnist Oliver Kamm, writing for his Times blog accused Seymour of historiographical distortions.^[26] Seymour posted a lengthy reply to Kamm's criticisms on his own blog.^[27] A critical review in The Guardian by Philippe Sands contended that despite the book's "damning material" on the supporters of war, this "potentially important book" was weakened by "the generality" of its conclusions and the failure to concede that there are instances where the use of force is justified.^[28]

Unhitched, published in 2013, focuses on Christopher Hitchens's work on religion, his engagement with British politics and his alleged embrace of American imperialism.^[29][30]

Corbyn, published in 2016, with a second edition published in 2017, is an analysis of Jeremy Corbyn's rise to the leadership of the Labour Party. Stephen Bush in the New Statesman described it as "the finest study of Corbyn yet written"^[31] with Robert Potts in The Times Literary Supplement described it as "witty and acute political and historical analysis from a position to the left of Corbyn".^[32] A Foreign Affairs review characterised it as "essential reading", "by turns inspiring and implausible".^[33] It was named among Times Higher Education's books of 2016, and The Observer's '100 best political books'.^[34][35]

On 2 September 2015, in a private Facebook comment on a Daily Telegraph column detailing Falklands War veteran and serious burns victim Simon Weston's remarks regarding then Labour Party Leadership candidate Jeremy Corbyn's plan, Weston believes, to "surrender" the Falkland Islands to Argentina, Seymour wrote: "If he knew anything, he'd still have his face".^[36]

Under a shared Facebook post, Seymour commented on a video of an Israeli: "He makes me sick. He's a piece of shit. He's standing there complaining that the army isn't helping the colonists keep the Palestinians in their place. Fuck him, they should cut his throat."^[37] Tom Peck of The Independent wrote that the Israeli was a "Jewish journalist",^{[dubious – discuss][36][38]} whereas Seymour questioned the "journalist" claim and wrote "he turns out to be a settler and hasbara activist, who runs an American-Israeli PR firm".^[37][39]

Seymour was a speaker at a September 2016 event in Liverpool organised by the Momentum group which coincided with the Labour Party's conference in the city. Katie Green, chair of the campaign of Jeremy Corbyn's unsuccessful challenger, Owen Smith in the 2016 Labour leadership election, was quoted by The Independent over Seymour's comments: "These kind of violent and deeply offensive remarks make a mockery of Jeremy's 'kinder, gentler politics.' Jeremy should be condemning his comments".^[38]

Seymour wrote a lengthy post in response, as well as a more concise apology.^[37][40] Part of the apology read:

"To be absolutely clear. I do not think that Simon Weston’s injuries deserve ridicule. I emphatically do not think that people who advocate for the West Bank settlers should have their throats cut. I certainly didn’t mention or even consider the ethnicity of the individual in question, and the attempts to imply that this was a factor in the original statement are invidious and dishonest. I at no point sought a public audience for these comments, and never sought to solicit anyone’s anguish. I am, of course, very sorry to anyone who was hurt."^[40]

• 2008 The Liberal Defence of Murder. ISBN 978-1-84467-240-0, Verso Books.^[10]
• 2008 "The Genocidal Imagination of Christopher Hitchens", in Christopher Hitchens and His Critics: Terror, Iraq and the Left. ISBN 0-8147-1687-3, New York University Press.^[41]
• 2009 "John Spargo and American Socialism", in Historical Materialism, 17: 2, 2009, pp. 272–285(14).^[42]
• 2010 "The War on Terror as Political Violence", in Marie Breen Smyth, ed., The Ashgate Research Companion to Political Violence, 2010^[43]
• 2010 The Meaning of David Cameron. ISBN 978-1-84694-456-7, Zero Books, 2010
• 2011 American Insurgents: A Short History of American Anti-Imperialism. ISBN 978-1-60846-141-7, Haymarket Books.^[44]
• 2012 Unhitched: The Trial of Christopher Hitchens. ISBN 978-1-84467-990-4, Verso Books.^[45]
• 2014 Against Austerity. ISBN 9780745333281, Pluto Press, London
• 2014 "Race and the Cold War", in Alexander Anievas, Nivi Manchanda, Robbie Shilliam, eds., Race and Racism in International Relations: Confronting the Global Colour Line, 2014^[46]
• 2016 Corbyn: The Strange Rebirth of Radical Politics. ISBN 978-1784785314, Verso Books, 2016
• 2019 The Twittering Machine. ISBN 9781999683382, Indigo Press, London
• 2022 The Disenchanted Earth: Reflections on Ecosocialism and Barbarism. ISBN 9781911648413, The Indigo Press, London