https://theintercept.com/2017/10/05/factory-farms-fbi-missing-piglets-animal-rights-glenn-greenwald/

This single Smithfield Foods farm breeds and then slaughters more than 1 million pigs each year. One of the odd aspects of animal mistreatment in the U.S. is that species regarded as more intelligent and emotionally complex — dogs, dolphins, cats, primates — generally receive more public concern and more legal protection. Yet pigs – among the planet’s most intelligent, social, and emotionally complicated species, capable of great joy, play, love, connection, suffering and pain, at least on a par with dogs — receive almost no protections, and are subject to savage systematic abuse by U.S. factory farms.

At Smithfield, like most industrial pig farms, the abuse and torture primarily comes not from rogue employees violating company procedures. Instead, the cruelty is inherent in the procedures themselves. One of the most heinous industry-wide practices is one that DxE activists encountered in abundance at Circle Four: gestational crating.

Where that technique is used, pigs are placed in a crate made of iron bars that is the exact length and width of their bodies, so they can do nothing for their entire lives but stand on a concrete floor, never turn around, never see any outdoors, never even see their tails, never move more than an inch. That was the condition in which the activists found the rotting piglet corpses and the two ailing piglets they rescued.