 He suggests that eco-socialism differs from Green politics at the most fundamental level because the 'Four Pillars' of Green politics (and the 'Ten Key Values' of the US Green Party) do not include the demand for the emancipation of labour and the end of the separation between producers and the means of production.Kovel is highly critical of those Greens who favour "working within the system".While he recognises the ability of within-system approaches to raise awareness, and believe that "the struggle for an ecologically rational world must include a struggle for the state", he believes that the mainstream Green movement is too easily co-opted by the current powerful socio-political forces as it "passes from citizen-based activism to ponderous bureaucracies scuffling for 'a seat at the table'".