A flag's potential for expressing deep-felt emotions in a condensed, but obvious form, has made it an important expression of national pride. Flags are always displayed in martial art schools (usually on the ceremonial wall of the training area), the flags are usually the flag of the country in which the school is located and the flag of the martial art's home country.
American flag: About the flag of the United States.
South Korean flag: About the flag of South Korea.
Other flags: About other flags that may be displayed.