Tag der Arbeit Google Doodle (Workers' Day)

International Workers' Day (also known as May Day) is a celebration of the international labour movement and left-wing movements. It commonly sees organized street demonstrations and marches by working people and their labour unions throughout most of the world. May 1 is a national holiday in more than 80 countries. It is also celebrated unofficially in many other countries.

http://en.wikipedia.org/wiki/International_Workers'_Day

http://tr.wikipedia.org/wiki/1_May%C4%B1s_%C4%B0%C5%9F%C3%A7i_Bayram%C4%B1