Here are the indisputable facts.
Mink are voracious carnivores. They eat small mammals, birds, fish, and frogs.
Mink are also playful, social animals with complex behaviors. They are wild animals, though, and don’t generally make good pets.
Mink farming is a deplorable practice in which animals are raised and butchered for their skins. The bodies are often ground up to make pet food.
These are all true statements, but they do set up a complicated ethical problem. What do you do with a mink farm in your neighborhood? I can tell you what you should not do, under any circumstances: you do not sneak onto the farm and release them all from their cages while singing “Born Free” and cheering them on as they scamper off to nearby farms, towns, wildlife refuges, and wilderness.
But somebody did that in Eden Valley, Minnesota. They freed 30,000 mink from a farm. You know what’s going to happen now, right?
Desperately hungry carnivores are going to radiate out, killing every small animal they can find. Rabbits and mice and birds are going to get hit hard; you might want to lock up your cats for a while, too. They won’t be particularly efficient at it, I suspect, since they’ve been raised in cages, so there will be some survivors. The mink are going to be competing intensely with each other for increasingly scarce food. They’re going to fight with each other, and most of them are going to starve to death.
It sounds like another PETA-inspired bit of ignorant fanaticism that does far more harm than good.