This map is a decade old, but it feels increasingly topical with every passing year. More than ever, we live in a Walled World.
Even though the stats on the map may have changed somewhat, its shocking main point still stands: the rich countries of the world are, in fact, the world's biggest gated community.
This world-wide fence is rarely presented to us in its totality; we catch glimpses of its various bits whenever they're in the news. Those separate pieces don't necessarily seem to belong to the same puzzle.
The US-Mexico border is far away from "Fortress Europe," and both are different from Israel's security wall. Other, similar barriers have their own peculiarities. But in the end, they all do the same thing: keep the poor, huddled masses from the shantytowns off the manicured lawns of the First World.