Lefebvre's argument in "The Production of Space" is that space is a social product, or a complex social construction (based on values, and the social production of meanings) which affects spatial practices and perceptions. This argument implies the shift of the research perspective from space to processes of its production; the embrace of the multiplicity of spaces that are socially produced and made productive in social practices; and the focus on the contradictory, conflictual, and, ultimately, political character of the processes of production of space. As a Marxist theorist (but highly critical of the economic structuralism that dominated the academic discourse in his period), Lefebvre argues that this social production of urban space is fundamental to the reproduction of society, hence of capitalism itself. The social production of space is commanded by a hegemonic class as a tool to reproduce its dominance (see Antonio Gramsci).