Don't get me wrong, animals deserve to be treated humanely and people who abuse animals are scumbags, but is the solution really more abuse and torture? IMO this is pretty fucked up and some one just wanted to pretend they were in "Reservoir Dogs" for their own personal satisfaction, not because it served any kind of justice.
Exactly, I don't like this kind of thing, It's just people justifying treating another person badly, I'm an Anarchist for fucks sake, so you don't need to sell vigilante justice to me when the cops are corrupt and so on, it's detroit for fucks sake, but the solution isn't to go around torturing people which is essentially what these guys have done. The private security firm that established itself over there did a far better job stopping people in detroit than scumbags like this ever will, I remember that story about how they stopped people robbing cigarette trucks.
If you effectively prevent people from committing crimes in the first place, they won't dare to try their luck again, just because the risk vs reward ratio isn't worth it.