If A Tree Falls: A Story of the Earth Liberation Front, is the latest documentary from…Marshall Curry, who received an Oscar nomination for his 2005 documentary Street Fight, chronicling Cory Booker’s 2002 unsuccessful mayoral campaign in the state of New Jersey. It chronicles the rise and fall of a decentralized network of covert cells known collectively as the ELF, who used “economic sabotage and guerrilla warfare to stop the exploitation and destruction of the environment,” and features interviews with former ELF members, their arson victims, lawmakers, policemen involved in the cases, and archival footage of several ELF attacks. In 2005, the FBI called ELF America’s greatest domestic terrorist threat, responsible for over 1,200 acts of crime and nearly $100 million in property damage.
more, here.

