https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/8723870
Nogales Border Wall and Concertina Wire
Layers of Concertina are added to existing barrier infrastructure along the U.S. - Mexico border near Nogales, AZ, February 4, 2019. Photo: Robert Bushell. Original public domain image from Flickr
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