The regressive left is a new term that encompasses a much older way of thinking about the world, our place in it, and what to do about it. It is a brilliant and evocative term: it brings to mind a Stalinist-left that has survived the twentieth century; it cleverly subverts the progressive label that such writers usually wear; perhaps most importantly, it is a term that will always be pejorative. When the socialist intellectual Michael Harrington called some of his ex-comrades neoconservatives, it was an insult that its targets transformed into a badge of honour. There is no risk of that here. It’s unlikely that the Art of Mentoring publishing house will commission Glenn Greenwald to write Letters to a Young Regressive. And that’s a good thing. The regressive left will discredit itself.