"Right of return" is a synonym for the right of the Palestinians to invade Israel. And the Palestinian people are so incredibly violent that they've been walled off by their Muslim brothers in both Jordan and Egypt. You don't hear much about those security fences, but when it comes to the West Bank and Gaza, Jordan and Egypt keep their distance from the barbarians for good reason: they get killed if they don't keep the walls in place.
And Israel is, of course, the proverbial "canary in the coal mine" for Western Civilization.
Images via: Atlas Shrugs, W.P., and Conservative Tree House.