Not meant as a gotcha, but how do people expect that to work without enforcement from above? It seems like you kind of need a state to enforce and realize something like that. I'm mostly referring to anarchist/vegan societies here. While you could have a socialist/vegan state, I have no idea how that could work in an anarchist society. (I'll fully admit I don't know much about anarchism, so anyone who knows more, feel free to enlighten me.)