The Clatsop-Nehalem are an unrecognized confederation of Native Americans in Oregon with a truly striking flag.
According to its designer, Mark Scovell (son of tribal chief Joe Scovell):
The circular design of the yellow touches all of the other colors because it represents the Creator whose presence relates to all of life. The red represents blood which is life-sustaining, the blue represents food resources, and the black represents cooperative relationships. The Clatsop-Nehalem flag is a symbol of the four things that our Tribe believes in: first, we believe in community…we all need to work together to be a strong group and to survive; second, we believe in the power of the sun and that it is held in the sky by God to give us life; third, we believe in Blood that flows through us giving us life; fourth, we believe in the Sea as it is a provider of food and other things to help us survive.
Portland Flag Association 