Some Green Anarchists engage in direct action, or ecoterrorism.
From the en.wikipedia.org
The institute came to public attention in 2006 when it was targeted in what federal prosecutors described as an ecoterrorism bombing plot.
From the fresnobee.com
During the war, the Pentagon issued what turned out to be exaggerated assessments of oil spills into the gulf, putting Saddam Hussein's acts of ecoterrorism in the worst possible light.
From the time.com
The Earth Observation Satellite Corporation, which operates the Landsat satellites, has released these infrared images showing the extent of the world's worst act of ecoterrorism.
From the newscientist.com
Tides of War, a film charting the ecological effects and aftermath of the Gulf conflict, is a visually powerful record of what was ecoterrorism on a horrendously grand scale.
From the newscientist.com
Following the September 11, 2001 attacks several laws were passed increasing the penalty for ecoterrorism, and hearings were held in Congress discussing the activity of groups such as the ELF.
From the en.wikipedia.org
More examples
Violence carried out to further the political or social objectives of the environmentalists
Eco-terrorism usually refers to acts of terrorism, violence or sabotage committed in support of ecological, environmental, or animal rights causes against persons or their property.
Terrorism with an ecological motive, such as attacks against corporations perceived to be harming the natural environment