Dozens Detained in Migrant Unrest at French Port of Calais

French police arrested 35 people after some migrants and their supporters broke through security and climbed on a ferry boat during a protest at Calais.

About 2,000 people took part in the protest Saturday at the port city in northern France, where thousands of migrants are camped out, hoping to cross the Channel to Britain.

The unrest forced police to shut down the port for a time. By Saturday evening, operations had returned to normal, the Interior Ministry said in an e-mailed statement Sunday.

More than a million migrants made their way to Europe last year seeking work or asylum from conflicts in Syria and elsewhere. The influx has led to tensions along borders and challenged the European Union’s commitment to free movement within its 28 nations.

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