Europe! It’s a little known fact, but the European flag is in effect the flag of all Europeans. This means that even the Russians can use it. The same goes for the Swiss, the Norwegians and the Brits after Brexit. It's the flag of the council of Europe, invented after WWII to promote peace and understanding on the entire European continent. The EU merely adopted it, but it still remains the continental flag of Europe. We don't oppose the EU project, but we want to reclaim the flag as a symbol of all Europeans. We want to create a true European identity, independent of political structures and beliefs.
The Council of Europe on Wikipedia: https://en.wikipedia.org/wiki/Council_of_Europe