International Workers' Day, Labor Day, May Day. 勞動節

People wave a second Spanish Republic flag (C) and Communist flags during a May Day rally in Malaga, Spain. International Workers' Day, also known as Labor Day or May Day, commemorates the struggle of workers in industrialized countries in the 19th century for better working conditions.
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May 1, 2015
http://www.voanews.com/media/photogallery/day-in-photos-may-1-2015/2744767.html

Labour Day - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Labour_Day
勞動節 - 維基百科，自由的百科全書
http://zh.wikipedia.org/wiki/%E5%8A%B3%E5%8A%A8%E8%8A%82
International Workers' Day - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/International_Workers%27_Day
國際勞動節 - 維基百科，自由的百科全書
May Day
http://zh.wikipedia.org/wiki/%E5%9B%BD%E9%99%85%E5%8A%B3%E5%8A%A8%E8%8A%82

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