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At a refugee camp in Greece in 2021, he decried our “age of walls and barbed wire.”

Enclosed by walls topped with barbed wire, the workers' area of the compound was its own self-contained world, featuring a basketball court, supermarket and restaurants.

Elen, from Anglesey, said she suffered with pain that felt like "barbed wire around her stomach" before her diagnosis, which she was told was "just period pains".

According to the Local Democracy Reporting Service, the images used included closed shopfronts covered in graffiti and fences with barbed wire.

And the entire building is constructed with just a few materials: soil, water, sandbags, barbed wire, plaster and a bit of cement.