@Thomas,
Well, with the pig farmer the difference, if there is one, is that the harm is done because of disregard of the animals' suffering.
If we were consistent re regarding torment of animals as we do (unless we want to torment them for political advantage, in which case we pass laws saying we're allowed to torment some people) that of humans, we would regard the disregard as reckless, and prosecute.
As you say.
I hope we do in reality soon.
d(I only eat freerange pig products)lowan.