It's interesting that one of the main arguments against D.C. statehood is always that the flag would change. Yet here on an extremely US-centric website where mostly geography geeks hang around, they are unable to distinguish the 51-star flag from the flag of the US.
1. the inexistent 51-star flag
2. the flag of Vietnam
3. the flag of the Russian Empire
4. the flag of Guatemala
5. an old flag of Mexico
6. the flag of the ANC
7. the flag of Berlin
8. the flag of Ecuador
9. the flag of Kuwait
10. the flag of New Orleans
11. the flag of Niger
12. the flag of Alabama
13. the flag of Ontario
14. the flag of Croatia
1. flags of the United States
2. flags of China
3. flags of Germany
4. flags of Argentina
5. flags of Italy
6. flags of South Africa
7. flags of the Austrian Empire
8. flags of Colombia
9. flags of Iran
10. flags of France
11. flags of India
12. flags of Spain
13. flags of Canada
14. flags of Yugoslavia