McDonald's fast food chain in Beijing, China. (From a photographic gallery of images of fast food, in Hungry Planet: What the World Eats, p. 95) Fast Food. Has any human invention ever been as loved and loathed as fast food? Feelings run deep about the huge U.S. fast-food chains, especially McDonald's and KFC. Internationally recognized as symbols of Americanization, globalization, and overflowing schedules, they are also symbols of convenience, reliability, and (usually) cleanliness.