The anniversary of the Berlin Wall, built 50 years ago this August, brings to mind other notable barriers in the world. There is the Belfast Peace Wall, a barrier that remains amidst still unresolved conflict; the U.S. Mexico Border, what some call a desert monument to failure; Israel’s anti-terror fence, a wall around the West Bank; the Korean DMZ which may be the world’s most dangerous border and Ceuta and Melilla, North African cities which have become enclaves with high tech ramparts to keep out those making their way to Europe through Morocco. Homeland Security Secretary Janet Napolitano once quipped “Show me a 50-foot wall and I’ll show you a 51-feet ladder.” This may indirectly be hopeful for those barriers to eventually be torn down, but more to the point they stand as a reminder of how far we still have to go before there can be some oneness in the world.