“Preface to the Situationist International Anthology.In 1957 a few European avant-garde groups came together to form the Situationist International. Over the next decade the SI developed an increasingly incisive and coherent critique of modern society and of its bureaucratic pseudo-opposition, and its new methods of agitation were influential in leading up to the May 1968 revolt in France. Since then — although the SI itself was dissolved in 1972 — situationist theses and tactics have been taken up by radical currents in dozens of countries all over the world. In this anthology I have tried to present a useful selection of situationist writings while at the same time illustrating the SI’s origins and development. Thus some early texts are included even though they express positions that were later repudiated by the situationists. But even the later texts reveal mistakes, contradictions, projects that never materialized, problems that remain to…