Acts of eco-terror are becoming more common and endorsed by supposedly mainstream environmental groups. Ron Arnold, author of EcoTerror: The Violent Agenda to Save Nature, is here to comment:

“It’s not surprising that anti-pipeline extremists are getting physical. They’re losing. They’re desperate, so they escalate to threats and violence. And groups like the Sierra Club are endorsing them! This is the same pattern as the epidemic of eco-terrorism I worked against back in the 1990s. There was a federal terrorism research project I was in to stop escalation, sabotage, and bombings. It’s happening again.”