People attend a May Day march in London, England to celebrate International Workers' Day on May 1, 2016.
{"Image ImageDescription": "LONDON, UNITED KINGDOM - MAY 01: People attend a May Day march in London, England to celebrate International Workers' Day on May 1, 2016. (Photo by Tolga Akmen/Anadolu Agency/Getty Images)", "Image Copyright": "2016 Anadolu Agency"}