Chinese artist and human-rights activist Ai Weiwei has used metal fencing to create three monumental structures, in a campaign against Donald Trump's border-control measures.
Working with New York charity Public Art Fund, Ai has created temporary structures in three New York locations, all intended to resemble security fences. They include a giant golden cage in Central Park and an enclosure that slots inside the Washington Square Arch.

The project was funded thanks to a Kickstarter Campaign. It is named Good Fences Make Good Neighbors, the proverb that came from the poem Mending Wall, published by celebrated American poet Robert Frost in 1914.
Ai hopes it will provoke further discussion about the role that walls play in relationships ? in light of the President Trump's plans to tighten immigration controls, by building a new border wall between the USA and Mexico.
"Fences and territory have become an even more urgent topic for everyone to take notice of, especially in the US," Ai told a group of journalists at a press conference yesterday.
"We have policies to have very low limits to accept refugees and also to push away a lot of people who already work here, were born here, or made a great contribution to society," he added. "We are trying to push them away."
"We also want to build a great beautiful wall between US and Mexico, which is an unthinkable policy, but it is already in this process."

Ai emigrated to New York in 19...