Whilst I can understand their reasoning, as they were being farmed purely for their fur, releasing 6000 top level predators into the wild with no other natural predator was just irresponsible and criminal. Apparently, from what I've read, a police undercover agent was present when they (the activists) released them from Crow Hill Farm in 1998, though I've yet to read about any prosecutions....
https://www.bbc.co.uk/news/uk-englan...shire-43133682
Reading this who is more to blame, the police for allowing this to happen or the ALF....???