Why is the World so Divided - How to Create Unity in Today's World

It doesn’t take a genius to look at the world today and to see just how divided people are.  Relative to almost every subject, there are concrete sides.  This creates a dramatic polarization.  That polarization fuels division and war.  Especially because so many of these polarizations that exist today are about fears, insecurities and therefore deeply held values.  So, what do we do if we want unity in the world?