The best overall examination documentary about Earth First, regarding their mission and some philosophical concepts of deep ecology (biocentrism, that all life is equal and deserves to be respected and to live).
Filmed at and around the time of the 1987 Grand Canyon Round River Rendezvous.
"You haven´t lived until you've found something worth dying for" - Martin Luther King
Deep Ecology philosophy:
Deep ecology is a contemporary ecological philosophy that recognizes an inherent worth of all living beings, regardless of their instrumental utility to human needs. The philosophy emphasizes the interdependence of organisms within ecosystems and that of ecosystems with each other within the biosphere. It provides a foundation for the environmental, ecology and green movements and has fostered a new system of environmental ethics.
Deep ecology's core principle is the belief that, like humanity, the living environment as a whole has the same right to live and flourish. Deep ecology describes itself as "deep" because it persists in asking deeper questions concerning "why" and "how" and thus is concerned with the fundamental philosophical questions about the impacts of human life as one part of the ecosphere, rather than with a narrow view of ecology as a branch of biological science, and aims to avoid merely anthropocentric environmentalism, which is concerned with conservation of the environment only for exploitation by and for humans purposes, which excludes the fundamental philosophy of deep ecology. Deep ecology seeks a more holistic view of the world humans live in and seeks to apply to life the understanding that separate parts of the ecosystem (including humans) function as a whole.
EARTH FIRST: http://www.earthfirst.org
DEEP ECOLOGY: http://en.wikipedia.org/wiki/Deep_ecology