Watch VoirFilms. Since the fall of Saigon in 1975, Vietnamese refugees have built the largest Vietnamese community outside of Vietnam, in Orange County, California. In 1999, "Little Saigon" burst onto the national stage when a store owner displayed a poster of Ho Chi Minh, triggering protests by Vietnamese Americans struggling to reconcile their past demons with their present lives. Saigon, U.S.A. uses this moment to examine this community's changing identity and growing empowerment.