Workers, organized by labor unions and other labor organization take part in a rally to mark May Day, International Workers' Day in Madrid, Spain on May 01, 2016. Every year May Day is observed and commemorated as an official holiday all around Spain.
{"Image ImageDescription": "MADRID, SPAIN - MAY 01 : Workers, organized by labor unions and other labor organization take part in a rally to mark May Day, International Workers' Day in Madrid, Spain on May 01, 2016. Every year May Day is observed and commemorated as an official holiday all around Spain. (Photo by Burak Akbulut/Anadolu Agency/Getty Images)", "Image Copyright": "2016 Anadolu Agency"}