If the existence is a terroristic act how do you call farmers who breed these creatures on purpose?

Capitalists.

Our mass media can incite fear of chickens, pigs, and cattle. Then their existence itself can be defined as a terrorist act. We’ll redefine vegan to mean only those that eat terrorists to save the other animals. Actual vegans can call themselves “vegetablers”. Nothing changes and everyone feels good because if they don’t feel good then they’re not human.