Romani flag

The first World Romani Congress took place in London, 8 April 1971. At the congress, the visual appearance of the Romani flag was defined, as well as the official anthem and the Romani language. An agreement was reached that the flag will consist of two basic colours – green as a symbol of unlimited natural vastness and freedom of movement, and blue as a symbol of heavenly vastness. A wheel in the middle of the flag represents an eternal journey of the Roma people. 

 

Reference: Flag of the Romani people, available at: http://upload.wikimedia.org/wikipedia/commons/thumb/1/10/Flag_of_the_Romani_people.svg/900px-Flag_of_the_Romani_people.svg.png