Police officers block migrants along a road to prevent their access to train tracks which lead to the Channel Tunnel, in Calais, northern France, Wednesday, July 29, 2015. Migrants rushed the tunnel linking France and England repeatedly for a second night on Wednesday and one man was crushed by a truck in the chaos, deepening tensions surrounding the thousands of people camped in this northern French port city. (Photo by Thibault Camus/AP Photo)
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