The story
Coined (as ecodefense) by David Foreman in his 1985 book Ecodefense: A Field Guide to Monkeywrenching, from eco- + defence.
Etymology from Wiktionary, CC BY-SA 4.0.
ecodefence
Today it means: Collectively, actions intended to disrupt human activities perceived to be damaging to the environment, typically including civil disobedience and illegal sabotage. Full definition →