I think all people need an occasional look at where their food comes from. The amount of animal shit (rodents and the slaughtered animals themselves) in commercially sourced meat has increased in the last decade. If you stood a person in front of a meat grinder and said, "Here, now we throw in the appropriate legally-allowed amount of poop into the mix", fewer people would be in line to buy the end product.
Or if they were allowed to go visit the factory chicken farms and see the sick, diseased chickens that end up on their dinner plates, I think they would be unable to eat it.
Do people not realize that the recent laws aimed at preventing information gathering from factory farms is designed to prevent them from learning what they are really eating?