Europe Migrant Crisis - Sept. 6, 2015

Migrants walk from the main station in Dortmund, Germany, to a hall where they get first attendance, Sept. 6, 2015. Thousands of migrants and refugees arrived in Dortmund by trains.

Wellwishers wave to migrants arriving at the main railway station in Dortmund, Germany, Sept. 6, 2015. Austria and Germany opened their borders to thousands of exhausted migrants, bussed to the Hungarian border by a right-wing government that had tried to stop them but was overwhelmed by the sheer numbers reaching Europe's frontiers.

Migrants waiting for transport at a hall in Dortmund, Germany, Sept. 6, 2015. Thousands of migrants and refugees arrived in Dortmund by trains.

Helpers handling donations for refugees at a hall where the migrants wait for transport to asylum seekers facilities in Dortmund, Germany, Sept. 6, 2015.

Migrants walk after arriving by train to the main railway station in Munich, Germany, Sept. 6, 2015.

A migrant girl holds a sign expressing her love to Germany as she arrives at the train station in Saalfeld, central Germany, Sept. 5, 2015.

Migrants get some tea as they arrive at the Westbahnhof station in Vienna, Austria, Sept. 6, 2015.

A convoy of around 140 cars leaves for Hungary from Vienna, Sept. 6, 2015, to distribute aid to migrants and to collect refugees to bring back to Austria.

A migrant wrapped in a blanket eats an apple in a make-shift camp at the border crossing in Nickelsdorf, Austria, Sept. 6, 2015.

Austrian volunteers deliver food to arriving refugees in Vienna, Sept. 6, 2015.

A man sleeps in a parking lot as buses organized by the Austrian government line up in Hegyeshalom, Hungary, Sept. 6, 2015.

Refugees and migrants arrive onboard the Tera Jet passenger ship at the port of Piraeus, near Athens, Greece, Sept. 6, 2015.

A migrant rests on a crutch as he waits to enter a camp for registration procedure after crossing the Macedonian-Greek border near Gevgelija, Macedonia, Sept. 6, 2015.

Refugees and migrants sleep on the railway tracks close to the borders of Greece with Macedonia, near the village of Idomeni, Sept. 6, 2015.

Migrants walk towards the border line crossing the Macedonian-Greek border as a Greek policeman watches near Gevgelija, Macedonia, Sept. 6, 2015.

An Afghan refugee reacts after falling to the ground during scuffles between Greek police and refugees that protested over priority for a registration procedure at the port of Mytilene on the Greek island of Lesbos, Sept. 5, 2015.