"The this-worldliness of their thought': social movements and theory -- 'History does nothing': the primacy of praxis in movement theorising -- 'The authors and the actors of their own drama': a Marxist theory of social movement -- 'The bourgeoisis, historically, has played a most revolutionary part': social movements from above and below in historical capitalism -- 'The point is to change it': movements from below against neoliberalism.