Greens emphasize decentralization and local autonomy, in keeping with the Green commitment to non-hierarchical participatory democracy, so it is perhaps not surprising that the strength of the GreenParty does not derive from a central national organization.
Green and Growing's 158 signatories declared that "We think it essential to build a vigorous presidential campaign," citing as their chief reasons the need to gain ballot access for the GreenParty, to define the Greens as an independent party, and the failures of the Democrats on issues of foreign and domestic policy.
In the 2004 presidential election, the candidate of the GreenParty of the United States for President was lawyer David Cobb of Texas, and its candidate for vice-president was labor activist Pat LaMarche of Maine.
The four pillars define a GreenParty as a political movement that inherits its philosophy from four predecessors, the peace movement, the civil rights movement, the environmental movement, and the labour movement.
The four pillars were originally defined by European GreenParties, from the foundation of the German GreenParty in 1979-1980, and later adopted by the U.S. GreenParty.
GreenParties are almost universally egalitarian in their outlook, seeing that great disparities in wealth or influence are caused by the perversion of or total lack of social instituions that prevent the strong from plundering the weak.