TERRORISMFrom Earth Liberation to Accelerationism: A High-Level Review of Fifty Years of Domestic Infrastructure Terrorism

By Jesse Humpal

Published 3 April 2026

An examination of 50 years of domestic extremist attacks and plots against U.S. critical infrastructure and infrastructure-adjacent industrial and commercial targets, shows that critical-infrastructure sabotage has appeared across ideologically divergent milieus, with two dominant clusters: environmental and animal-rights extremism (peaking in the late 1990s and early 2000s) and a post-2015 rise in far-right extremist infrastructure plotting, including a subset of cases that explicitly reflect accelerationist intent.

Abstract: This article reviews 50 years of domestic extremist attacks and plots against U.S. critical infrastructure and infrastructure-adjacent industrial and commercial targets. Using an original open-source dataset (1970–July 2025) compiled from terrorism incident databases, government reporting, and a systematic review of federal case records, it documents how sabotage has appeared across ideologically divergent milieus, with two dominant clusters: environmental and animal-rights extremism (peaking in the late 1990s and early 2000s) and a post-2015 rise in far-right extremist infrastructure plotting, including a subset of cases that explicitly reflect accelerationist intent. The analysis distinguishes between issue-driven eco-sabotage that frequently targets grievance-linked commercial and industrial nodes and more contemporary plots that more often privilege critical systems, particularly the electric grid, for cascading disruption. A decade-by-decade narrative traces tactical evolution from arson and clandestine cells to digitally networked mobilization, firearms, and higher-casualty-risk methods. The article concludes by assessing the evolution of law-enforcement and policy responses, including post-9/11 eco-terrorism prosecutions, infrastructure reliability and physical-security standards, and more recent use of energy-facility statutes and intelligence sharing with owners and operators.

In February 2023, U.S. authorities foiled a neo-Nazi plot to sabotage five electrical substations around Baltimore, Maryland, a scheme intended to “completely destroy” power to the predominantly Black city.1 This far-right extremism accelerationist conspiracy, driven by racist ideology, echoes a very different wave of sabotage from 25 years earlier: On October 19, 1998, eco-extremists with the Earth Liberation Front (ELF) burned down part of the Vail Ski Resort in Colorado to protest its expansion into a lynx habitat, causing an estimated $12 million in damage.2 Though the perpetrators’ worldviews could not be further apart, these incidents underscore a striking convergence: Ideologically divergent extremist movements—from 1990s radical environmentalists to 2020s accelerationists—have fixated on U.S. critical and infrastructure-adjacent targets. In this article, ‘accelerationism’ refers to a strategic logic that treats violence as a means to hasten social breakdown and widen conflict, rather than a single ideology; while much contemporary infrastructure plotting emerges from far-right extremist milieus, accelerationist ideas can be adopted across ideologies. However, the data also shows a consistent targeting asymmetry: Eco-extremist campaigns more often focus on infrastructure-adjacent commercial and industrial sites linked to a specific grievance, while accelerationist actors more frequently privilege truly critical systems—especially the electric grid—for cascading disruption.