World Citizen flag by Garry Davis
Designed in 1953 by activist Garry Davis who also is founder of the World Service Authority.
The World Citizen is a social movement for global citizenship under a proposed world government. Its possible to buy a real-looking passport by the organisation and have been done by many but the documents are not government issued and are considered as “fantasy travel documents” by official government workers.
Once in a while there is news headlines with people getting caught when using a “World Government” passport for conducting questionable actions.