During the debates about the Muslim community center in Manhattan this should've been shown to every American and there would have no longer been a debate, or at least those against the community center would have looked a lot worse.
Diversity strengthen service due the nature of service. The inspiration to serve migrates from a place located deep with in the hearts and minds of people. No two heart and mind are absolutely alike, but all share the same migratory call to serve. So thus, like geese who internally are inspired to fly together south their flight serves them to reach far places that alone would be impossible. Thus, diversity is a means to reach what alone is thought to be impossible and thus diversity becomes a conduit of miracles.