Artists Ai Weiwei and Anish Kapoor will join forces for a 7 mile walk through London to mark the refugee crisis.
The two artists will each carry a single blanket as a symbol of the needs that faces 60 million refugees across the world.
The walk across the capital will take place on Thursday 17 September, stretching from the Royal Academy of Arts - where an Ai Weiwei retrospective has just opened - to Stratford.
Ai, who called last week for the British government to accept greater numbers of refugees streaming across European borders, said at the start of the march that the problem "concerns everybody."
"One might say in a way artists are refugees: they're always on the edge, they always sit with a mind to what's slightly outside," Kapoor said.
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