Unity after Detachment

I am posing the question of whether or not it is possible for our human race to dually detach from hierarchy and at the same time unify under communal effort.  The reason I bring this up is because I would like to make some noise during this most pinnacle moment in our human history, as to whether we should be thinking of ways to ultimately unify in leu of our potential for mass nuclear destruction.  I would like to create some dialogue about this possibility because its imperative to how we would like to see our world operate.  How perhaps could we learn from mistakes made before us?  Could we perhaps as intelligent species evolve into egalitarian naturalists, or is our survival dependent on more animal like instincts? If everyone was enlightened and still needed to survive together on this earth would they even act out of egalitarian principles, or would they wander and eat only what they find?  Give me your thoughts.