the label "utopian" by later socialists as a negative term in order to imply naivete and dismiss their ideas as fanciful or unrealistic. Religious sects whose members live communally such as the Hutterites are not usually called "utopian socialists", although their way of living is a prime example. They have been categorised as religious socialists by some. Similarly, modern intentional communities based on socialist ideas could also be categorised as "utopian socialist". For Marxists, the development of capitalism in Western Europe provided a material basis for the possibility of bringing about socialism because according to The Communist Manifesto "[w]hat the bourgeoisie produces above all is its own grave diggers", namely the working class, which must become conscious of the historical objectives set it by society. Reform versus revolution Revolutionary socialists believe that a social revolution is necessary to effect structural changes to the socioeconomic structure of society. Among revolutionary socialists there are differences in strategy, theory and the definition of revolution. Orthodox Marxists and left communists take an impossibilist stance, believing that revolution should be spontaneous as a result of contradictions in society due to technological changes in the productive forces. Lenin theorised that under capitalism the workers cannot achieve class consciousness beyond organising into trade unions and making demands of the capitalists. Therefore, Leninists advocate that it is historically necessary for a vanguard of class conscious revolutionaries to take a central role in coordinating the social revolution to overthrow the capitalist state and eventually the institution of the state altogether. Revolution is not necessarily defined by revolutionary socialists as violent insurrection, but as a complete dismantling and rapid transformation of all areas of class society led by the majority of the masses: the working class. Reformism is generally associated with social democracy and gradualist democratic socialism. Reformism is the belief that socialists should stand in parliamentary elections within capitalist society and if elected use the machinery of government to pass political and social reforms for the purposes of ameliorating the instabilities and inequities of capitalism. Within socialism, reformism is used in two different ways. One has no intention of bringing about socialism or fundamental economic change to society and is used to oppose such structural changes. The other is based on the assumption that while reforms are not socialist in themselves, they can help rally supporters to the cause of revolution by popularizing the cause of socialism to the