green scare
n.— «Multiple indictments have already been issued in these cases as part of a broad nationwide round-up of environmental and animal rights activists called “Operation Backfire” by the FBI, and colloquially referred to as the “green scare,” a reference to the “red scare” round-up of suspected communists in the US in the 1950’s that violated the constitutional rights of citizens to free expression of political and social dissent.» —“Olympia Green Scare: FBI Knocking Continues” by olycivlib Portland Independent Media Center (Oregon) May 15, 2006. (source: Double-Tongued Dictionary)