Guy Debord was the most influential figure in the Situationist International, the subversive group that helped trigger the May 1968 revolt in France. His book The Society of the Spectacle, originally published in Paris in 1967, has been translated into more than twenty other languages and is arguably the most important radical book of the twentieth century. This is the first edition in any language to include extensive annotations, clarifying the historical allusions and revealing the sources of Debord’s “détournements.”