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German police officer and a migrant boy joke with the officer's cap while migrants wait for a bus after their arrival at the main train station in Munich, southern Germany, September 1, 2015. Hundreds of migrants arrived in Germany during the night and the morning of September 1, 2015, with train's from Hungary and Austria. AFP PHOTO / CHRISTOF STACHECHRISTOF STACHE/AFP/Getty Images
German police officer and a migrant boy joke with the officer's cap while migrants wait for a bus after their arrival at the main train station in Munich, southern Germany, September 1, 2015. Hundreds of migrants arrived in Germany during the night and the morning of September 1, 2015, with train's from Hungary and Austria. AFP PHOTO / CHRISTOF STACHECHRISTOF STACHE/AFP/Getty Images

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    Flood of migrants arrives in Germany

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Flood of migrants arrives in Germany

Migrants have begun being processed by officials and volunteers in Munich after a grueling journey for a better life. CNN's Fred Pleitgen reports.

Flood of migrants arrives in Germany

Migrants have begun being processed by officials and volunteers in Munich after a grueling journey for a better life. CNN's Fred Pleitgen reports.