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Screaming in agony, a young migrant girl gets her hair tangled in barbed wire as her family scramble through mud seeking a better life in Europe.

Barely old enough to understand what is happening to her, the girl was forced to crawl under a razor-sharp fence to get across the border into Hungary.

But as she wriggles through the dirt, her hair becomes caught and she lets out a cry of pain.

A woman, believed to be her mother, who is carrying a baby in one arm, uses her other hand to untangle her and the family rush to safety.