Flag of Vietnam

The flag of Vietnam, or "red flag with a gold star", was designed in 1940 and used during an uprising against French rule in southern Vietnam that year. Red symbolizes the goals of social revolution behind the Vietnamese, national uprising. The star represents the five main classes in Vietnamese society—intellectuals, farmers, workers, businesspeople and military personnel.

Quotes
Together we fight under the nation’s sacred flag The flag is soaked with our crimson blood, shed for the nation The yellow star is the colour of our race’s skin Stand up, quickly! The nation’s soul is calling for us Intellectuals, peasants, workers, traders and armymen United as a five-pointed yellow star...
 * ... All those of red blood and yellow skin
 * Nguyễn Hữu Tiến, as quoted in "Flag Designer Urban Myths Squelched" (2005), Vietnam Embassy USA