Abstract
Political sociology has from its very inception had an overriding concern with the nature of political order and stability, and the threats to that stability. Ever since ‘the entry of the masses on to the stage of history’, at the time of the French Revolution, one source of that threat has regularly been seen as the industrial working class. That has been so, whether the threat was perceived by the liberal centre and conservative right; or whether is was converted, by the left, into a definite promise to overthrow ‘bourgeois’ stability. In both cases, in the anxious speculations of Mill and Tocqueville as much as the triumphant predictions of Marx and Engels, a key role was marked out for the developing working class of nineteenthcentury Europe.