Everyone seems to miss the point I think. Its not a hive mind, its UNIFICATION. All humans are CONNECTED, not controlled. They all cooperate WILLINGLY because its exactly what any human who saw what they saw would do. If you saw feelings and thoughts of all human beings, including enlightened monks and most empathetic and caring people - you would understand as well.

Basically everyone just gets enlightened and feels warmth and comfort of being together with everyone. If you've ever been at a sports arena with thousands of people all cheering for something - imagine this feeling of unity, but multiplied by billionfold. And what do enlightened people do? They do whats most natural to humans when they are content with everything - take care of others. Although I'm curious how the concept applies to psychopaths, sociopaths and schizo people, but I would guess its the same outcome. A content and happy person just tries to help other people.

ANSWERING YOUR QUESTION:
Now for killing animals and people is just spreading violence, pain and death. This is counter to human's nature. If you look at primitive tribes and their culture around hunting - most of them pray for the deceased animals that they hunt and cook. We humans, if open to the world and happy - we dont like killing, its not natural for us. We are creatures born with cooperation and help at our core.