This is an alternative link from invidious
"Behind the Mask, a production of Uncaged Films and ARME directed and produced by Shannon Keith, is an outstanding and thought provoking documentary about the Animal Liberation Front (ALF). Winner of numerous awards, the seventy-two minute investigative film weaves together interviews with some of the leading figures in the animal liberation movement with undercover footage of animals in laboratories, as well as being liberated and in loving sanctuaries.
The films subtitle: “The story of the people who risk everything to save animals,” is nothing but the truth. For more than thirty years the organization has been freeing nonhuman animals around the world and destroying property that causes harm to those animals totaling up in the hundreds of millions of dollars of “damage.” As the film explains, the ALF has been identified by the FBI as the number one domestic threat in the U.S. despite the fact that they are against harming any living creature human or nonhuman, and have not harmed anyone since becoming established in the mid-1970s."