Factory farming is an attitude that regards animals and the natural world merely as commodities to be exploited for profit.
In animal agriculture, this attitude has led to institutionalized animal cruelty, massive environmental destruction and resource depletion, and animal and human health risks.

http://www.factoryfarming.com/index.htm

Warning! These are actual photographs and videos documenting the abuse found in "food animal" factories, stockyards, and slaughterhouses. Many people will find them unsettling.