Yet on some level we do know the truth. We know that meat production is a messy business, but we choose not to know just how messy it is. We know that meat comes from an animal, but we choose not to connect the dots. And often, we eat animals and choose not to know we're even making a choice. Violent ideologies are structured so that it is not only possible, but inevitable, that we are aware of an unpleasant truth on one level while being oblivious to it on another. Common to all violent ideologies is this phenomenon of knowing without knowing. And it is the essence of carnism.

p. 71 - Why We Love Dogs, Eat Pigs, and Wear Cows (2010)