This is a random listing of major incidents involving members of Earth First!:
1981: Founder Dave Foreman and others unfurled a 300-foot roll of plastic sheeting down the Glen Canyon Dam in northern Arizona. From a distance, the dam appeared to have cracked.
1983: In a remote part of the Siskiyou National Forest near Grants Pass, Ore., Foreman and his cohorts set up a roadblock to prevent a construction company from building a path to ancient woodlands that had never been logged. When the logs were removed, Foreman stood in the way.
1990: Earth First! members were among 1,200 environmentalists who staged protests on Wall Street and in the financial district of San Francisco, complaining that corporations had used Earth Day as a marketing tool without doing enough to protect the environment. More than 250 people were arrested.