Marx's Critique on Old Ideology

Marx's historical materialism is based on criticism to the old ideology,and critical spirit is the fundamental characteristic of Marx's ideology.Inold ideologycriticism,Marx and mainly aimed at Hegel,the youth Hegel,Feuerbach and Proudhon etc.the issues involved are mainly about social consciousness and social existing relationship,the essence and source of the ideology,and ideological supra-class and scientific,etc.