The flag of the Finnish people living in Sweden. It is flown on February 24th to celebrate the Sverigefinnarnas dag.
from /r/vexillology Top comment: Rather tasteful design in my opinion. The picture is from the website of Luleå Kommun. https://www.lulea.se/language/suomeksi/suomen-kielen-hallintoalue/kansalliset-vahemmistot.html.











