In a new Sunday Supplement series for The Westminster Hour first broadcast in July 2005, Wayne Brittenden explores the history of anarchism.
In the first part, the journalist and documentary-maker explains the roots of the political philosophy which go back as far as the English Civil War.
But he begins with his recollections of a conference in Venice twenty one years ago.
In the concluding part of his series, he wonders whether global capitalism and the decline of ideology might kill off libertarian socialism for good.