The term eco-warrior is a self-description for an environmentalactivist that adopts a 'hands-on' effort to save a plot of land. In the UK it coined the term in the 1990s, a label that many people actively taking ecological direct action resisted, for philosophical reasons.
Another use of the term refers to an environmental activist who engages in illegal activities, also known as eco-terrorism. However, an eco-warrior is also someone who utilizes the courts to halt, suspend, or otherwise derail a human activity that the activist believes adversely impacts the environment.
An eco-warrior can be someone who engages in an environmental organisation (e.g. Greenpeace) or an environmental company that delivers safekeeping or improvements for the environment (e.g. directly by selling environmental products as environmentally friendly cars, or indirectly by carbon dioxide offsets).
Made famous in the US for a hurling a brick through the window of a McDonald's during the so-called "Battle in Seattle", French activist and small-scale cheese farmer José Bové has been fighting neo-liberalism on his home turf for decades.
Paul Watson and the direct-action conservation group known as the Sea Shepherd Conservation Society, which he founded, can be called eco-warriors for their direct engagements of ships engaging in overfishing and commercial whaling.
The direct action of William Bunting saved the wildlife habitat of Thorne Moors from the planned dumping of 32 million tons of fuel-ash, peat-cutting and drainage, and caused the reinstatement of public footpaths on maps of the same Moors.