Migrant Crisis in Europe, Sept. 4, 2015

A police officer stands guard as migrants stage a protest in front of a train at Bicske railway station, Hungary, Sept. 4, 2015

Migrants hold signs in front of Keleti railway station in Budapest, Hungary, Sept. 4, 2015.

A young migrant girl holds up a sign during a protest in front of a train at Bicske railway station, Hungary, Sept. 4, 2015.

Asylum seekers sleep at Keleti underground railway station in Budapest, Hungary, Sept. 4, 2015.

Men burn papers to warm themselves outside a train that was stopped in Bicske, Hungary, Sept. 4, 2015.

Migrants look out through the window of a train at the railway station in Bicske, Hungary, Sept. 4, 2015.

A paramilitary police officer carries the lifeless body of a migrant child, lifting it from the seashore near the Turkish resort of Bodrum, Sept. 2, 2015.

A funeral transport vehicle (front) carrying the bodies of drowned Syrian migrants, including three-year old boy Aylan Kurdi, drives to the Turkish-Syrian border in Suruc, bordering with the northern Syrian town of Kobani, Turkey, Sept. 4, 2015.

In this image made from video, mourners carry a coffin during the burial of Rehan Kurdi and her sons Aylan, 3, and Galip, 5, after they drowned during a desperate voyage from Turkey to Greece, in their hometown of Kobani, the Syrian Kurdish region they fled, Sept. 4, 2015.